#include<iostream>
using namespace std;

int main(void)
{
	int sum = 0,l, m, n;
	cin >> l >> m >> n;
	
	m += n / 25;
	n %= 25;
	l += m / 4;
	m %= 4;
	l %= 10;

	sum = l + m + n;

	cout << sum;

	return 0;
}