#include <bits/stdc++.h>
using namespace std;

int main() {
    int l,m,n;
    cin >> l >> m >> n;

    m += n/25;
    n %= 25;
    l += m/4;
    m %= 4;
    l%=10;

    cout << l+m+n << endl;
    return 0;
}