using System;

​

Console.Write("Enter number of strings: ");

int n = int.Parse(Console.ReadLine());

​

string sum = "";

string[] jumps = new string[n];

for (int s = 0; s < n; s++) {

    string x = Console.ReadLine();

    jumps[s] = x;

    sum += x + " ";

}

Console.WriteLine(sum);

​

string f = "";

for (int f = n - 1; f >= 0; f--){

    Console.Write(jumps[f] + " ");

}

​

Console.WriteLine(" ");

for (int g = 0; g < n; g++){

    if (g % 2 == 0){

    Console.Write(jumps[g] + " ");

    }

}

​

Console.WriteLine(" ");

for (int o = 0; o < n; o++) {

    if (jumps[o] == "bingo"){

        Console.Write(o);

    }

}

​