using System;

public class Program

{

    public static int maxNum(int n1, n2, n3)

        {

        if (n1 > n2 && n1 > n3) return n1;

        if (n2 > n1 && n2 > n1) return n2;

        if (n3 > n1 && n1 > n2) return n3;

        }

}

    public static void Main()

    {

        int n1 = 3;

        int n2 = 4;

        int n3 = 1;

        Console.WriteLine(maxNum(n1,n2,n3));

    }

}