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

int main () {

    int L, M, N;
    cin >> L >> M >> N;

    M += L / 25;
    L %= 25;

    N += M / 4;
    M %= 4;

    N %= 10;

    cout << L + M + N << endl;

    return 0;
}