using System;

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

            int a = 0;
            a = L / 25;
            if (L / 25 == 0)
            {
                a = L;
            }

            int b = 0;
            int m = M * 25;
            b = m / 100;
            if(m/100==0)
            {
                b = M;
            }

            int c = 0;
            int n = N * 100;
            int cc = n / 1000;
            if(cc==0)
            {
                c = N;
            }

            int ans = a + b + c;

            Console.WriteLine(ans);

        }
    }
}