using System;

public class Program
{
    public static void Main(string[] args)
    {
        int L = 0, M = 0, N = 0;
        L = int.Parse(Console.ReadLine());
        M = int.Parse(Console.ReadLine());
        N = int.Parse(Console.ReadLine());

        if (L == 0 && M == 0 && N == 0) { Console.WriteLine(0); return; }
                
        while (N >= 25 )  { N -= 25; M += 25; }
        while (M >=  4)     { M -= 4; L += 1; }
        while (L >= 10) { L -= 10; }

        Console.WriteLine(N + M + L);
    }
}