题目:
#include<bits/stdc++.h>
using namespace std;
const int N = 1010;
int n, m;
int v[N], w[N];
int f[N];
int main() {
//优化输入
ios::sync_with_stdio(false);
//物品个数n
cin >> n >> m;
//读入体积和重量
for (int i = 1; i <= n; i++) cin >> v[i] >> w[i];
//01背包模板
for (int i = 1; i <= n; i++)
for (int j = m; j >= v[i]; j--)
f[j] = max(f[j], f[j - v[i]] + w[i]);
cout << f[m] << endl;
return 0;
}