#include<iostream>
#include<stdio.h>

using namespace std;

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

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

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