using System;

class Program
{
	static void Main ()
	{
		string[] inputNums = Console.ReadLine ().Split (' ');
		int l = int.Parse (inputNums[0]);
		int m = int.Parse (inputNums[1]);
		int n = int.Parse (inputNums[2]);

		int money = 100 * l + 25 * m + n;
		money = money % 1000;
		int ans = money / 100;
		money = money % 100;
		ans += money / 25;
		money = money % 25;
		ans += money;

		Console.WriteLine (ans);
	}
}