#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
using namespace std;

int mmax(int a, int b) {
	int x = (a > b) ? a : b;
	return x;
}

int mmin(int a, int b) {
	int x = (a < b) ? a : b;
	return x;
}

int main() {
	int a, b, c;
	cin >> a >> b >> c;
	int sum = 0;
	sum += c % 25;
	b += c / 25;

	sum += b % 4; 
	a += b / 4;

	sum += a % 10;

	cout << sum << endl;
	return 0;
}