#include<stdio.h>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <algorithm>
#include <sstream>
#include <iostream>
#include <string>

using namespace std;

int main() {

	int L, M, N;
	cin >> L >> M >> N;

	M += N / 25;
	N %= 25;

	L += M / 4;
	M %= 4;

	L %= 10;

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

	return 0;
}