using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace App
{
    class Program
    {
        public static bool IsRightTriangle(double a, double b, double c)
        {
            return Math.Abs(c - Math.Sqrt(a * a + b * b)) < double.Epsilon;
        }
 
        public static void Main(string[] args)
        {
            Console.WriteLine(IsRightTriangle(4, 3, 5));
            Console.WriteLine(IsRightTriangle(2, 3, 1));
        }
    }
}

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