#include <iostream>
#include <vector>
#include <numeric>
using namespace std;

int main() {
    int L, M, N;
    cin >> L >> M >> N;
    M += N / 25;
    N %= 25;
    L += M / 4;
    M %= 4;
    L %= 10;
    cout << L+M+N<< endl;
}