#include<iostream>
using namespace std;

int main(){

	int L, M, N;

	cin >> L >> M >> N;

	if(N >= 25){
	M = M + (N/25);
	N = N - (25 * (N / 25));
	}

	if(M >= 4){
	L = L + (M/4);
	M = M - (4 * (M / 4));
	}

	if(L >= 10){
	L = L - (10 * (L / 10));
	}

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

	return 0;
}