自己去找错误
#include <iostream>
using namespace std;
const int N = 1010;
int f[N][N], v[N], w[N], n, m;
int main()
{
cin >> n >> m;
for ( int i = 1; i <= n; i ++ ) cin >> v[i] >> w[i];
for ( int i = 1; i <= n; i ++ )
for ( int j = 0; j <= m; j ++ )
{
f[i][j] = f[i - 1][j];
if ( hhh >= rrr) f[i][j] = max(f[i][j], f[i - 1][j - v[i]] + w[i]);
}
cout << f[n][m];
return 0;
}