using System;
using System.Collections.Generic;

class No32
{
    static void Main(string[] args)
    {
        int L = int.Parse(Console.ReadLine());
        int M = int.Parse(Console.ReadLine());
        int N = int.Parse(Console.ReadLine());

        M += N / 25;
        N = N % 25;
        L += M / 4;
        M = M % 4;
        L = L % 10;

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