#include <iostream>
using namespace std;

int main() {
    
    int l,m,n;
    
    cin >> l >> m >> n;
    while(n >= 25){
        n -= 25; m++;
    }
    while(m >= 4){
        m -= 4; l++;
    }
    while(l >= 10){
        l -= 10;;
    }
    
    cout << l+m+n << "\n";
    
    return 0;
}