using System;

public class Program {
	public static void Main(string[] args)
	{
		int count = 0;
		int l = int.Parse(Console.ReadLine());
		int m = int.Parse(Console.ReadLine());
		int n = int.Parse(Console.ReadLine());
		int[] coins = {100, 25, 1};
		int money = l * coins[0] + m * coins[1] + n * coins[2];
		money %= 1000;
		for (int i = 0; i < coins.Length; i++) {
			count += money / coins[i];
			money %= coins[i];
		}
		count += money;
		Console.WriteLine(count);
	}
}