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

int main() {
    int a = 0, b, c, d;
    cin >> b >> c >> d;
    c += d / 25;
    b += c / 4;
    d %= 25;
    c %= 4;
    b %= 10;
    int ans = b + c + d;
    cout << ans << endl;
    return 0;
}