Tue, 19 Nov 2019 12:31:19 +0800

master
大蒟蒻 6 years ago
parent 6ccf84864d
commit c9114ed740

@ -0,0 +1,86 @@
{
// Place your acm 工作区 snippets here. Each snippet is defined under a snippet name and has a scope, prefix, body and
// description. Add comma separated ids of the languages where the snippet is applicable in the scope field. If scope
// is left empty or omitted, the snippet gets applied to all languages. The prefix is what is
// used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders.
// Placeholders with the same ids are connected.
// Example:
// "Print to console": {
// "scope": "javascript,typescript",
// "prefix": "log",
// "body": [
// "console.log('$1');",
// "$2"
// ],
// "description": "Log output to console"
// }
"ICPC Starndard Header C++98": {
"scope": "c,cpp",
"prefix": "acm98",
"body": [
"#define _CRT_SECURE_NO_WARNINGS",
"#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING",
"#include <bits/stdc++.h>",
"using namespace std;",
"#define CRP(t, x) const t &x",
"#define OPX(op, t, x) operator op(CRP(t, x))",
"#define OPL(t, x) bool OPX(<, t, x) const",
"#define FIL(x, v) memset(x, v, sizeof(x))",
"#define CLR(x) FIL(x, 0)",
"#define NE1(x) FIL(x, -1)",
"#define INF(x) FIL(x, 0x3f)",
"#ifndef _DEBUG",
"#define _DEBUG 0",
"#endif // !_DEBUG",
"#define IFD if (_DEBUG)",
"typedef int64_t ll, i64;",
"typedef uint64_t ull, u64;",
"inline char getchar(int)",
"{",
" static char buf[64 << 20], *S = buf, *T = buf;",
" if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;",
" return S == T ? EOF : *S++;",
"}",
"template <typename T>",
"inline bool read(T &x)",
"{",
" int ch = x = 0, f = 1;",
" while (!isdigit(ch = getchar()))",
" if (ch == EOF)",
" return false;",
" else if (ch == '-')",
" f = 0;",
" for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';",
" return x = f ? x : -x, true;",
"}",
"template <typename T1, typename T2>",
"inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }",
"template <typename T1, typename T2, typename T3>",
"inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }",
"template <typename T1, typename T2, typename T3, typename T4>",
"inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }",
"template <typename T1, typename T2, typename T3, typename T4, typename T5>",
"inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }",
"inline ll gcd(ll a, ll b)",
"{",
" for (; b; swap(a, b)) a %= b;",
" return a;",
"}",
"inline ll fpow(ll a, ll b, ll m)",
"{",
" ll r = 1;",
" for (; b; b >>= 1, a = a * a % m)",
" if (b & 1) r = r * a % m;",
" return r;",
"}",
"const double eps = 1e-8;",
"inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }",
"int main()",
"{",
" $0",
" return 0;",
"}",
]
}
}

@ -7,6 +7,12 @@
},
"cmake.configureOnOpen": false,
"files.associations": {
"functional": "cpp"
"functional": "cpp",
"chrono": "cpp",
"type_traits": "cpp",
"csetjmp": "cpp",
"cfloat": "cpp",
"ciso646": "cpp",
"iosfwd": "cpp"
}
}

@ -0,0 +1,118 @@
#define _CRT_SECURE_NO_WARNINGS
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#ifdef ONLINE_JUDGE
#include <algorithm>
#include <bitset>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <complex>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <cwchar>
#include <cwctype>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
typedef long long int64_t;
typedef unsigned long long uint64_t;
#else
#include <bits/stdc++.h>
#endif
using namespace std;
#define CRP(t, x) const t &x
#define OPX(op, t, x) operator op(CRP(t, x))
#define OPL(t, x) bool OPX(<, t, x) const
#define FIL(x, v) memset(x, v, sizeof(x))
#define CLR(x) FIL(x, 0)
#define NE1(x) FIL(x, -1)
#define INF(x) FIL(x, 0x3f)
#ifndef _DEBUG
#define _DEBUG 0
#endif // !_DEBUG
#define IFD if (_DEBUG)
typedef int64_t ll, i64;
typedef uint64_t ull, u64;
inline char getchar(int)
{
static char buf[64 << 20], *S = buf, *T = buf;
if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
return S == T ? EOF : *S++;
}
template <typename T>
inline bool read(T &x)
{
int ch = x = 0, f = 1;
while (!isdigit(ch = getchar()))
if (ch == EOF)
return false;
else if (ch == '-')
f = 0;
for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
return x = f ? x : -x, true;
}
template <typename T1, typename T2>
inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
template <typename T1, typename T2, typename T3>
inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
template <typename T1, typename T2, typename T3, typename T4>
inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
template <typename T1, typename T2, typename T3, typename T4, typename T5>
inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
inline ll gcd(ll a, ll b)
{
for (; b; swap(a, b)) a %= b;
return a;
}
inline ll fpow(ll a, ll b, ll m)
{
ll r = 1;
for (; b; b >>= 1, a = a * a % m)
if (b & 1) r = r * a % m;
return r;
}
const double eps = 1e-8;
inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
int main()
{
int a, b;
read(a, b);
printf("%d", a + b);
return 0;
}

@ -0,0 +1,97 @@
#define _CRT_SECURE_NO_WARNINGS
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#include <bits/stdc++.h>
using namespace std;
#define CRP(t, x) const t &x
#define OPX(op, t, x) operator op(CRP(t, x))
#define OPL(t, x) bool OPX(<, t, x) const
#define FIL(x, v) memset(x, v, sizeof(x))
#define CLR(x) FIL(x, 0)
#define NE1(x) FIL(x, -1)
#define INF(x) FIL(x, 0x3f)
#ifndef _DEBUG
#define _DEBUG 0
#endif // !_DEBUG
#define IFD if (_DEBUG)
typedef int64_t ll, i64;
typedef uint64_t ull, u64;
template <typename... Types>
using comtype = typename common_type<Types...>::type;
template <typename T>
using enable_if_arithmetic = typename enable_if<is_arithmetic<T>::value>::type;
template <typename T>
using enable_if_integral = typename enable_if<is_integral<T>::value>::type;
inline char getchar(int)
{
static char buf[64 << 20], *S = buf, *T = buf;
if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
return S == T ? EOF : *S++;
}
template <typename T, typename = enable_if_integral<T>>
inline bool read(T &x)
{
int ch = x = 0, f = 1;
while (!isdigit(ch = getchar()))
if (ch == EOF)
return false;
else if (ch == '-')
f = 0;
for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
return x = f ? x : -x, true;
}
template <typename T, typename... Args, typename = enable_if_integral<T>>
inline bool read(T &x, Args &... args) { return read(x) && read(args...); }
template <typename T1, typename T2, typename TResult = comtype<T1, T2>>
inline TResult mmin(CRP(T1, v1), CRP(T2, v2)) { return min<TResult>(v1, v2); }
template <typename T, typename... Args, typename TResult = comtype<T, Args...>>
inline TResult mmin(CRP(T, v), const Args &... args) { return min<TResult>(v, mmin(args...)); }
template <typename T1, typename T2, typename TResult = comtype<T1, T2>>
inline TResult mmax(CRP(T1, v1), CRP(T2, v2)) { return max<TResult>(v1, v2); }
template <typename T, typename... Args, typename TResult = comtype<T, Args...>>
inline TResult mmax(CRP(T, v), const Args &... args) { return max<TResult>(v, mmax(args...)); }
inline ll gcd(ll a, ll b)
{
for (; b; swap(a, b)) a %= b;
return a;
}
inline ll fpow(ll a, ll b, ll m)
{
ll r = 1;
for (; b; b >>= 1, a = a * a % m)
if (b & 1) r = r * a % m;
return r;
}
constexpr double eps = 1e-8;
inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
const int N = 4e5 + 55;
int fa[N];
int find(int x) { return x == fa[x] ? x : fa[x] = find(fa[x]); }
int main()
{
int n, m;
read(n, m);
for (int i = 0; i <= n; i++) fa[i] = i;
for (int i = 0, x, y; i < m; i++) read(x, y), fa[find(x)] = find(y);
int grps = 0;
for (int i = 1; i <= n; i++) grps = max(grps, find(i));
vector<vector<int>> v(grps + 1);
for (int i = 1; i <= n; i++) v[find(i)].push_back(i);
int ans = 0;
set<int> S;
for (int i = 1; i <= n; i++) S.insert(i);
while (!S.empty())
{
int curmin = *S.begin();
int ty = find(curmin);
int curmax = *v[ty].rbegin();
for (int i = curmin + 1; i < curmax; i++)
{
if (find(i) != ty)
ans++, curmax = max(curmax, *v[find(i)].rbegin()), fa[find(i)] = ty;
S.erase(i);
}
S.erase(curmin), S.erase(curmax);
}
printf("%d", ans);
return 0;
}

@ -0,0 +1,62 @@
#define _CRT_SECURE_NO_WARNINGS
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#include <bits/stdc++.h>
using namespace std;
#define CRP(t, x) const t &x
#define OPX(op, t, x) operator op(CRP(t, x))
#define OPL(t, x) bool OPX(<, t, x) const
#define FIL(x, v) memset(x, v, sizeof(x))
#define CLR(x) FIL(x, 0)
#define NE1(x) FIL(x, -1)
#define INF(x) FIL(x, 0x3f)
#ifndef _DEBUG
#define _DEBUG 0
#endif // !_DEBUG
#define IFD if (_DEBUG)
typedef int64_t ll, i64;
typedef uint64_t ull, u64;
inline char getchar(int)
{
static char buf[64 << 20], *S = buf, *T = buf;
if (S == T) T = fread(S = buf, 1, 64 << 20, stdin) + buf;
return S == T ? EOF : *S++;
}
template <typename T>
inline bool read(T &x)
{
int ch = x = 0, f = 1;
while (!isdigit(ch = getchar()))
if (ch == EOF)
return false;
else if (ch == '-')
f = 0;
for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
return x = f ? x : -x, true;
}
template <typename T1, typename T2>
inline bool read(T1 &v1, T2 &v2) { return read(v1) && read(v2); }
template <typename T1, typename T2, typename T3>
inline bool read(T1 &v1, T2 &v2, T3 &v3) { return read(v1) && read(v2) && read(v3); }
template <typename T1, typename T2, typename T3, typename T4>
inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4) { return read(v1) && read(v2) && read(v3) && read(v4); }
template <typename T1, typename T2, typename T3, typename T4, typename T5>
inline bool read(T1 &v1, T2 &v2, T3 &v3, T4 &v4, T5 &v5) { return read(v1) && read(v2) && read(v3) && read(v4) && read(v5); }
inline ll gcd(ll a, ll b)
{
for (; b; swap(a, b)) a %= b;
return a;
}
inline ll fpow(ll a, ll b, ll m)
{
ll r = 1;
for (; b; b >>= 1, a = a * a % m)
if (b & 1) r = r * a % m;
return r;
}
const double eps = 1e-8;
inline int sgn(double x) { return x > eps ? 1 : x < -eps ? -1 : 0; }
int main()
{
$0
return 0;
}
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