|The game Chomp starts with a grid 3 cells high and N cells wide.
Two players take turns selecting a remaining cell in the grid, and
chomping (removing) all the cells to the right and above the selected cell
(including the chosen one). The player who chomps the lower-leftmost
cell loses the game. Here is a sample of two moves in the game:
3 XX XX
2 XXXX => chomp(4,1) => XXX => chomp(1,2) =>
1 XXXXX XXX XXX
12345 12345 12345
Determine which player wins if each player plays
optimally, and how many total (for both players combined) turns it
takes (the last move is the losing move). The player who will win
when playing optimally plays to win as quickly as possible, while the
player who is destined to lose plays to make the game last as long as
possible. If player 1 will win, return the total number of moves required. Otherwise, return the negation of the number of moves required.