#include<iostream>
using namespace std;

int main(){

	int L, M, N;

	cin >> L >> M >> N;

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

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

	if(N >= 10){
	N = N - (N/10);
	}

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

	return 0;
}