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

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