Submission #162811

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Source Code Expand

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ABC0007D
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = Console.ReadLine().Split().Select(int.Parse).ToArray();
            Console.WriteLine(Enumerable.Range(input[0], input[1] - input[0]).Count(s => s.ToString().Contains('4') || s.ToString().Contains('9')));
        }
    }
}

Submission Info

Judge Result