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North Pole Retirement

1000ms 262144K


Santa has gotten quite old and is entering retirement. To get ready, he'd like to practice playing some bingo.

Santa plays a special type of bingo on a $$$N \times N$$$ grid, where each cell contains a unique number between $$$1$$$ and $$$N^2$$$. Some permutations of these numbers are called out successively. When a full row or column is called out, Santa wins!

Given Santa's board and the order in which the numbers are called, determine which number Santa will win with.


A single integer, $$$2 \leq N \leq 100$$$.

An $$$N \times N$$$ grid with numbers $$$1...N^2$$$, showing the board

The $$$N^2$$$ numbers, in the order they're called


The number that will cause Santa to win

Sample Input:

2 7 9
8 3 1
6 5 4
4 6 8 7 5 3 2 9 1

Sample Output:



Note that the first row/column to fill up is the bottom row.


CodeForces Gym

Provider CodeForces Gym

Origin UTPC Contest 10-29-21 Div. 2 (Beginner)

Code GYM103380B


Submitted 0

Passed 0

AC Rate 0%

Date 10/31/2021 14:46:35


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