#include <iostream>
using namespace std;

int main(void){
//input
	int L,M,N;
	cin >> L >> M >> N;
//calc
	while(N >= 25){
		N -= 25;
		M++;
	}
	
	while(M >= 4){
		M -= 4;
		L++;
	}
	
	while(L >= 10){
		L -= 10;
	}
//output
	cout << L+M+N << endl;
}