#include<iostream>

using namespace std;

int main() {
	int L, M, N;
	cin >> L >> M >> N;
	while (N >= 25) {
		N = N - 25;
		M++;
		//cout << N << " " << M << endl;
	}
	while(M>=4){
		M = M - 4;
		L++;
		//cout << M << " " << L << endl;
	}
	while (L >= 10) {
		L = L - 10;
	}
	cout << L + M + N << endl;
	return 0;

}