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25 lines
512 B
25 lines
512 B
#include <bits/stdc++.h>
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using namespace std;
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const int N = 110;
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const int M = 1010;
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int n, m;
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int w[N], v[N];
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int f[N][M];
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int main() {
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cin >> m >> n;
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for (int i = 1; i <= n; i++) cin >> v[i] >> w[i];
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for (int i = 1; i <= n; i++)
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for (int j = 1; j <= m; j++) {
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f[i][j] = f[i - 1][j]; // 不选
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if (j >= v[i])
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f[i][j] = max(f[i][j], f[i - 1][j - v[i]] + w[i]); // 选
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}
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printf("%d\n", f[n][m]);
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return 0;
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}
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