#include <iostream>	//cin, cout
#include <vector>	//vector
#include <algorithm> //sort,min,max
#include <string>	//string
#include <ios>		//fixed
#include <iomanip>	//setprecision
#include <utility> //swap

using namespace std;

int main() {

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

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

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

	L = L % 10;

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

	return 0;

}