#include<bits/stdc++.h>

using namespace std;

int main() {
    double n, m, s;
    cin >> n >> m;
    s = m;
    for (int i = 0; i < n; i++) {
        double a;
        cin >> a;
        if (m >= a) {
            m = m - a;
        }
    }
    cout << ceil(m + s - s * 0.88);
    return 0;
}