There is a game called “I Wanna Be the Guy”, consisting of n levels. Little X and his friend Little Y are addicted to the game. Each of them wants to pass the whole game.
Little X can pass only p levels of the game. And Little Y can pass only q levels of the game. You are given the indices of levels Little X can pass and the indices of levels Little Y can pass. Will Little X and Little Y pass the whole game, if they cooperate each other?
Input
The first line contains a single integer n (1 ≤ n ≤ 100).
The next line contains an integer p (0 ≤ p ≤ n) at first, then follows p distinct integers a1, a2, …, ap (1 ≤ ai ≤ n). These integers denote the indices of levels Little X can pass. The next line contains the levels Little Y can pass in the same format. It’s assumed that levels are numbered from 1 to n.
Output
If they can pass all the levels, print “I become the guy.”. If it’s impossible, print “Oh, my keyboard!” (without the quotes).
Examples
Input
4 3 1 2 3 2 2 4
Output
I become the guy.
Input
4 3 1 2 3 2 2 3
Output
Oh, my keyboard!
Note
In the first sample, Little X can pass levels [1 2 3], and Little Y can pass level [2 4], so they can pass all the levels both.
In the second sample, no one can pass level 4.
Solution
We can use a HashSet to store the levels that Little X and Little Y can pass. Then, we can check if they can complete the entire game.
C# Solution
Solution1 – HashSet
int n = int.Parse(Console.ReadLine());
HashSet<string> hSet = new HashSet<string>();
for (int k = 0; k < 2; k++)
{
string[] arr = Console.ReadLine().Split(' ').ToArray();
for (int i = 1; i < arr.Length; i++)
{
hSet.Add(arr[i]);
}
}
Console.WriteLine(hSet.Count == n ? "I become the guy." : "Oh, my keyboard!");
Conclusion
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