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22 lines
448 B
22 lines
448 B
#include <bits/stdc++.h>
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using namespace std;
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const int N = 30010;
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int n, m;
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int f[N];
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int main() {
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//物品个数n
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scanf("%d %d", &m, &n); //注意一下这里输入的顺序
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// 01背包模板
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for (int i = 1; i <= n; i++) {
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int v, w;
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scanf("%d %d", &v, &w);
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for (int j = m; j >= v; j--)
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f[j] = max(f[j], f[j - v] + v * w);
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}
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printf("%d\n", f[m]);
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return 0;
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} |