using System;

class Program
{
    static void Main()
    {
        int L = int.Parse(Console.ReadLine());
        int M = int.Parse(Console.ReadLine());
        int N = int.Parse(Console.ReadLine());
        int total = L * 100 + M * 25 + N * 1;
        int result = 0;

        if(total % 100 > 0){
            result += total / 100;
            total = total / 100;
        }

        if(total % 25 > 0){
            result += total / 100;
            total = total / 100;
        }

        if(total > 0){
            result += total;
            total = total / 100;
        }

        Console.WriteLine(result);

    }
}