#include <bits/stdc++.h>

using namespace std;
const int N = 1010;
int n, m, w[N], v[N], f[N];
string s[N];
int main() {
    cin >> n >> m;
    for (int i = 1; i <= n; ++i) cin >> w[i] >> v[i];
    for (int i = 1; i <= n; ++i) {
        for (int j = m; j >= w[i]; --j) {
            int x = f[j - w[i]] + v[i];
            if (x > f[j]) {
                f[j] = x;
                s[j] = s[j - w[i]] + ' ' + (char) (i + '0');
            }
        }
    }
    cout<<f[m]<<endl;
    cout<<s[m];
    return 0;
}