#include <iostream>
using namespace std;

int main() {
    int l, m, n;
    cin >> n >> m >> l;
    m += l/25;
    l -= (l/25) * 25;
    n += m/4;
    m -= (m/4) * 4;
    n -= (n/10) * 10;
    cout << l + m + n << endl;;
}