#include<iostream>
#include<string>
#include<math.h>
using namespace std;

int main() 
{
	int a,b,c;
	cin >> c >> b >> a;
	b = b + a / 25;
	a = a - 25 * (a / 25);
	c = c + b / 4;
	b = b - 4 * (b / 4);
	c = c - 10 * (c / 10);
	cout << a + b + c;

}