#include <iostream>		//cin, cout
#include <vector>		//vector
#include <algorithm>	//sort,min,max,count
#include <string>		//string,getline, to_string

using namespace std;

int main() {

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

	int ans = 0;

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

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

	ans += L % 10;

	cout << ans << endl;

	return 0;

}