Codechef : Problem name " Rearranging digits to get a multiple of 5 " solution in C#

 =================================Solution====================================

using System;

public class Test

{

public static void Main()

{

    int t=Convert.ToInt32(Console.ReadLine());

for(int i=0;i<t;i++){

    

    int N=Convert.ToInt32(Console.ReadLine());

    string str=Console.ReadLine();

    

    if(str.Contains('0') || str.Contains('5'))

    Console.WriteLine("YES");

    else

    Console.WriteLine("NO");

}

}

}

===============================Explanation=================================

If the string entered by the user contains character 0 or 5 then it is surely divisible by 5