#include <iostream>

using namespace std;

int main() {
	int L, M, N;
	int sum = 0;
	cin >> L >> M >> N;

	sum += N % 25;
	M += N / 25;

	sum += M % 4;
	L += M / 4;

	L = L % 10;

	sum += L;

	cout << sum << endl;
}