#P7043. [USACO][2009][OPEN][S] Cow Digit Game
[USACO][2009][OPEN][S] Cow Digit Game
Description
Bessie is playing a number game against Farmer John, and she wants you to help her achieve victory.
Game i starts with an integer (1 <= <= 1,000,000). Bessie goes first, and then the two players alternate turns. On each turn, a player can subtract either the largest digit or the smallest non-zero digit from the current number to obtain a new number. For example, from 3014 we may subtract either 1 or 4 to obtain either 3013 or 3010, respectively. The game continues until the number becomes 0, at which point the last player to have taken a turn is the winner.
Bessie and FJ play G (1 <= G <= 100) games. Determine, for each game, whether Bessie or FJ will win, assuming that both play perfectly (that is, on each turn, if the current player has a move that will guarantee his or her win, he or she will take it).
Consider a sample game where = 13. Bessie goes first and takes 3, leaving 10. FJ is forced to take 1, leaving 9. Bessie takes the remainder and wins the game.
Format
Input
- Line 1: A single integer: G
- Lines 2..G+1: Line i+1 contains the single integer:
Output
- Lines 1..G: Line i contains "YES" if Bessie can win game i, and "NO" otherwise.
Samples
2
9
10
YES
NO
OUTPUT DETAILS:
For the first game, Bessie simply takes the number 9 and wins.
For the second game, Bessie must take 1 (since she cannot take 0), and then FJ can win by taking 9.