using System;
using System.Linq;

class Program
{
    public void Solve()
    {
        int L = int.Parse(Console.ReadLine());
        int M = int.Parse(Console.ReadLine());
        int N = int.Parse(Console.ReadLine());

        M += N / 25;
        N %= 25;

        L += M / 4;
        M %= 4;

        L %= 10;

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

    static void Main()
    {
        var solver = new Program();
        solver.Solve();
    }
}