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

int main(){
    int l, m, n;
    cin >> l >> m >> n;
    if( n/25 > 0 ){
        m += n/25;
        n = n%25;
    }
    if( m/4 > 0 ){
        l += m/4;
        m = m%4;
    }
    if( l/10 > 0 ){
        l = l%10;
    }
    cout << l+m+n << endl ;
    return 0;
}