#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
typedef long long ll;
typedef pair<int,int>PII;
//define int long long  // signed
#define ios  ios::sync_with_stdio(0);cin.tie(0),cout.tie(0)
#define LF(x) fixed<<setprecision(x); //保留小数 
int main()
{


    return 0;
}

加速器
#include<bits/stdc++.h>
using namespace std;
const int N = 1010;
int f[N];
int v[N], w[N];
int n, m;
int main()
{
    ios:: sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    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 = m; j >= v[i]; j--) {
            f[j] = max(f[j], f[j - v[i]] + w[i]);
        }
    }
    cout << f[m] << endl;
}