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

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

    if (n/25 >= 1) {
        m = m + n/25;
        n = n%25;
    }

    if (m/4 >= 1) {
        l = l + m/4;
        m = m%4;
    }

    if (l/10 >= 1) l = l%10;

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