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45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
#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 OPL(t, x) bool operator<(CRP(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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typedef long long ll, i64;
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const int N = 1e6 + 50;
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bool vis[N];
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int a[N];
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void read(int &x)
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{
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int ch = x = 0;
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while (!isdigit(ch)) ch = getchar();
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for (; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
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}
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int main()
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{
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int n, m, q;
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read(n), read(m), read(q);
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for (int i = 1; i <= n; i++) read(a[i]);
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for (int i = 1, x, y; i < m; i++)
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{
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read(x), read(y);
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if (x == y) continue;
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vis[x] = true;
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}
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for (int i = 1; i <= n; i++)
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{
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if (vis[i]) a[i] = 0;
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a[i] += a[i - 1];
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}
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ll ans = 0;
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for (int i = 1, x, y; i <= q; i++)
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{
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read(x), read(y);
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ans ^= i * (a[y] - a[x - 1]);
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}
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printf("%lld", ans);
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return 0;
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} |