Tue, 19 Nov 2019 12:31:19 +0800
parent
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{
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// Place your acm 工作区 snippets here. Each snippet is defined under a snippet name and has a scope, prefix, body and
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// description. Add comma separated ids of the languages where the snippet is applicable in the scope field. If scope
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// is left empty or omitted, the snippet gets applied to all languages. The prefix is what is
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// used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
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// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders.
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// Placeholders with the same ids are connected.
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// Example:
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// "Print to console": {
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// "scope": "javascript,typescript",
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// "prefix": "log",
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// "body": [
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// "console.log('$1');",
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// "$2"
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// ],
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// "description": "Log output to console"
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// }
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"ICPC Starndard Header C++98": {
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"scope": "c,cpp",
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"prefix": "acm98",
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"body": [
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"#define _CRT_SECURE_NO_WARNINGS",
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"#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING",
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"#include <bits/stdc++.h>",
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"using namespace std;",
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"#define CRP(t, x) const t &x",
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"#define OPX(op, t, x) operator op(CRP(t, x))",
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"#define OPL(t, x) bool OPX(<, t, x) const",
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"#define FIL(x, v) memset(x, v, sizeof(x))",
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"#define CLR(x) FIL(x, 0)",
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"#define NE1(x) FIL(x, -1)",
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"#define INF(x) FIL(x, 0x3f)",
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"#ifndef _DEBUG",
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"#define _DEBUG 0",
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"#endif // !_DEBUG",
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"#define IFD if (_DEBUG)",
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"typedef int64_t ll, i64;",
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"typedef uint64_t ull, u64;",
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"inline char getchar(int)",
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"{",
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" static char buf[64 << 20], *S = buf, *T = buf;",
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" if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;",
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" return S == T ? EOF : *S++;",
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"}",
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"template <typename T>",
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"inline bool read(T &x)",
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"{",
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" int ch = x = 0, f = 1;",
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" while (!isdigit(ch = getchar()))",
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" if (ch == EOF)",
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" return false;",
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" else if (ch == '-')",
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" f = 0;",
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" for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';",
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" return x = f ? x : -x, true;",
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"}",
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"template <typename T1, typename T2>",
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"inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }",
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"template <typename T1, typename T2, typename T3>",
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"inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }",
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"template <typename T1, typename T2, typename T3, typename T4>",
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"inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }",
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"template <typename T1, typename T2, typename T3, typename T4, typename T5>",
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"inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }",
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"inline ll gcd(ll a, ll b)",
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"{",
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" for (; b; swap(a, b)) a %= b;",
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" return a;",
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"}",
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"inline ll fpow(ll a, ll b, ll m)",
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"{",
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" ll r = 1;",
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" for (; b; b >>= 1, a = a * a % m)",
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" if (b & 1) r = r * a % m;",
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" return r;",
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"}",
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"const double eps = 1e-8;",
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"inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }",
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"int main()",
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"{",
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" $0",
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" return 0;",
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"}",
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]
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}
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}
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@ -0,0 +1,118 @@
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#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#ifdef ONLINE_JUDGE
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#include <algorithm>
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#include <bitset>
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#include <cctype>
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#include <cerrno>
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#include <cfloat>
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#include <ciso646>
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#include <climits>
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#include <clocale>
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#include <cmath>
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#include <complex>
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#include <csetjmp>
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#include <csignal>
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#include <cstdarg>
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#include <cstddef>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <ctime>
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#include <cwchar>
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#include <cwctype>
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#include <deque>
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#include <exception>
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#include <fstream>
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#include <functional>
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#include <iomanip>
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#include <ios>
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#include <iosfwd>
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#include <iostream>
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#include <istream>
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#include <iterator>
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#include <limits>
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#include <list>
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#include <locale>
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#include <map>
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#include <memory>
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#include <new>
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#include <numeric>
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#include <ostream>
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#include <queue>
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#include <set>
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#include <sstream>
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#include <stack>
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#include <stdexcept>
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#include <streambuf>
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#include <string>
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#include <typeinfo>
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#include <utility>
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#include <valarray>
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#include <vector>
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typedef long long int64_t;
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typedef unsigned long long uint64_t;
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#else
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#include <bits/stdc++.h>
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#endif
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using namespace std;
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#define CRP(t, x) const t &x
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#define OPX(op, t, x) operator op(CRP(t, x))
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#define OPL(t, x) bool OPX(<, t, x) const
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#define FIL(x, v) memset(x, v, sizeof(x))
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#define CLR(x) FIL(x, 0)
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#define NE1(x) FIL(x, -1)
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#define INF(x) FIL(x, 0x3f)
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#ifndef _DEBUG
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#define _DEBUG 0
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#endif // !_DEBUG
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#define IFD if (_DEBUG)
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typedef int64_t ll, i64;
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typedef uint64_t ull, u64;
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inline char getchar(int)
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{
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static char buf[64 << 20], *S = buf, *T = buf;
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if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
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return S == T ? EOF : *S++;
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}
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template <typename T>
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inline bool read(T &x)
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{
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int ch = x = 0, f = 1;
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while (!isdigit(ch = getchar()))
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if (ch == EOF)
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return false;
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else if (ch == '-')
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f = 0;
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for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
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return x = f ? x : -x, true;
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}
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template <typename T1, typename T2>
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inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
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template <typename T1, typename T2, typename T3>
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inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
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template <typename T1, typename T2, typename T3, typename T4>
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inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
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template <typename T1, typename T2, typename T3, typename T4, typename T5>
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inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
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inline ll gcd(ll a, ll b)
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{
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for (; b; swap(a, b)) a %= b;
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return a;
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}
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inline ll fpow(ll a, ll b, ll m)
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{
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ll r = 1;
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for (; b; b >>= 1, a = a * a % m)
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if (b & 1) r = r * a % m;
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return r;
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}
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const double eps = 1e-8;
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inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
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int main()
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{
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int a, b;
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read(a, b);
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printf("%d", a + b);
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return 0;
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}
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@ -0,0 +1,97 @@
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#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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#define CRP(t, x) const t &x
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#define OPX(op, t, x) operator op(CRP(t, x))
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#define OPL(t, x) bool OPX(<, t, x) const
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#define FIL(x, v) memset(x, v, sizeof(x))
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#define CLR(x) FIL(x, 0)
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#define NE1(x) FIL(x, -1)
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#define INF(x) FIL(x, 0x3f)
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#ifndef _DEBUG
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#define _DEBUG 0
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#endif // !_DEBUG
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#define IFD if (_DEBUG)
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typedef int64_t ll, i64;
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typedef uint64_t ull, u64;
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template <typename... Types>
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using comtype = typename common_type<Types...>::type;
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template <typename T>
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using enable_if_arithmetic = typename enable_if<is_arithmetic<T>::value>::type;
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template <typename T>
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using enable_if_integral = typename enable_if<is_integral<T>::value>::type;
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inline char getchar(int)
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{
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static char buf[64 << 20], *S = buf, *T = buf;
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if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
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return S == T ? EOF : *S++;
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}
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template <typename T, typename = enable_if_integral<T>>
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inline bool read(T &x)
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{
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int ch = x = 0, f = 1;
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while (!isdigit(ch = getchar()))
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if (ch == EOF)
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return false;
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else if (ch == '-')
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f = 0;
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for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
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return x = f ? x : -x, true;
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}
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template <typename T, typename... Args, typename = enable_if_integral<T>>
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inline bool read(T &x, Args &... args) { return read(x) && read(args...); }
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template <typename T1, typename T2, typename TResult = comtype<T1, T2>>
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inline TResult mmin(CRP(T1, v1), CRP(T2, v2)) { return min<TResult>(v1, v2); }
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template <typename T, typename... Args, typename TResult = comtype<T, Args...>>
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inline TResult mmin(CRP(T, v), const Args &... args) { return min<TResult>(v, mmin(args...)); }
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template <typename T1, typename T2, typename TResult = comtype<T1, T2>>
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inline TResult mmax(CRP(T1, v1), CRP(T2, v2)) { return max<TResult>(v1, v2); }
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template <typename T, typename... Args, typename TResult = comtype<T, Args...>>
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inline TResult mmax(CRP(T, v), const Args &... args) { return max<TResult>(v, mmax(args...)); }
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inline ll gcd(ll a, ll b)
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{
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for (; b; swap(a, b)) a %= b;
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return a;
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}
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inline ll fpow(ll a, ll b, ll m)
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{
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ll r = 1;
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for (; b; b >>= 1, a = a * a % m)
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if (b & 1) r = r * a % m;
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return r;
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}
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constexpr double eps = 1e-8;
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inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
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const int N = 4e5 + 55;
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int fa[N];
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int find(int x) { return x == fa[x] ? x : fa[x] = find(fa[x]); }
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int main()
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{
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int n, m;
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read(n, m);
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for (int i = 0; i <= n; i++) fa[i] = i;
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for (int i = 0, x, y; i < m; i++) read(x, y), fa[find(x)] = find(y);
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int grps = 0;
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for (int i = 1; i <= n; i++) grps = max(grps, find(i));
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vector<vector<int>> v(grps + 1);
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for (int i = 1; i <= n; i++) v[find(i)].push_back(i);
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int ans = 0;
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set<int> S;
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for (int i = 1; i <= n; i++) S.insert(i);
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while (!S.empty())
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{
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int curmin = *S.begin();
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int ty = find(curmin);
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int curmax = *v[ty].rbegin();
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for (int i = curmin + 1; i < curmax; i++)
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{
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if (find(i) != ty)
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ans++, curmax = max(curmax, *v[find(i)].rbegin()), fa[find(i)] = ty;
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S.erase(i);
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}
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S.erase(curmin), S.erase(curmax);
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}
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printf("%d", ans);
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return 0;
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}
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@ -0,0 +1,62 @@
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#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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#define CRP(t, x) const t &x
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#define OPX(op, t, x) operator op(CRP(t, x))
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#define OPL(t, x) bool OPX(<, t, x) const
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#define FIL(x, v) memset(x, v, sizeof(x))
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#define CLR(x) FIL(x, 0)
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#define NE1(x) FIL(x, -1)
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#define INF(x) FIL(x, 0x3f)
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#ifndef _DEBUG
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#define _DEBUG 0
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#endif // !_DEBUG
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#define IFD if (_DEBUG)
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typedef int64_t ll, i64;
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typedef uint64_t ull, u64;
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inline char getchar(int)
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{
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static char buf[64 << 20], *S = buf, *T = buf;
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if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
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return S == T ? EOF : *S++;
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}
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template <typename T>
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inline bool read(T &x)
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{
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int ch = x = 0, f = 1;
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while (!isdigit(ch = getchar()))
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if (ch == EOF)
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return false;
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else if (ch == '-')
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f = 0;
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for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
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return x = f ? x : -x, true;
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}
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template <typename T1, typename T2>
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inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
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template <typename T1, typename T2, typename T3>
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inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
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template <typename T1, typename T2, typename T3, typename T4>
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inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
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template <typename T1, typename T2, typename T3, typename T4, typename T5>
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inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
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inline ll gcd(ll a, ll b)
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{
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for (; b; swap(a, b)) a %= b;
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return a;
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}
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inline ll fpow(ll a, ll b, ll m)
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{
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ll r = 1;
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for (; b; b >>= 1, a = a * a % m)
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if (b & 1) r = r * a % m;
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return r;
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}
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const double eps = 1e-8;
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inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
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int main()
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{
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$0
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return 0;
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}
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