#include <iostream>
using namespace std;
int main() {
    int l, m, n;
    cin >> l >> m >> n;
    while (n >= 25) {
        n -= 25;
        m += 1;
    }
    while (m >= 4) {
        m -= 4;
        l += 1;
    }
    while (l >= 10) {
        l -= 10;
    }
    cout << l + m + n << endl;
    return 0;
}