using System;

public class Program
{
  static void Main()
  {
    int hyakuen = Convert.ToInt32(Console.ReadLine());
    int nizyugoen = Convert.ToInt32(Console.ReadLine());
    int itien = Convert.ToInt32(Console.ReadLine());
    int Senen = 0;

    nizyugoen = nizyugoen + itien / 25;
    itien = itien % 25;

    hyakuen = hyakuen + nizyugoen / 4;
    nizyugoen = nizyugoen % 4;

    Senen = hyakuen / 10;
    hyakuen = hyakuen % 10;

    int Kouka = itien + nizyugoen + hyakuen;

    Console.WriteLine(Kouka.ToString());
  }
}