#include<iostream>
using namespace std;

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