Description
A vote is held after singer A and singer B compete in the final round of a singing competition.
Your job is to count the votes and determine the outcome。
Input
The input will be two lines. The first line will contain V (1 ≤ V ≤ 15), the total number of
votes.
The second line of input will be a sequence of V characters, each of which will be A or B,
representing the votes for a particular singer。
Output
The output will be one of three possibilities:
• A, if there are more A votes than B votes;
• B, if there are more B votes than A votes;
• Tie, if there are an equal number of A votes and B votes.