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Tomorrow Genius 2008
Tomorrow Genius Contest is a traditional event of Daisy Hill Primary School for the purpose of promoting the spirit of its motto, "Mens et Manus" among the students. This year's rules are quite simple: Given N triangles, the contestants are asked to piece them together to make a rectangle with width W and height H as rapidly and possible. The contestants are allowed to move, rotate but not turn over the triangles. The first one who achieves the goal is the winner of the contest.
Of course the host doesn't want to hold a no-winner contest. So he asks you, the technology support of the contest, to determine whether a problem is solvable.
The first line contains three integers, N (1 ≤ N ≤ 10), W (1 ≤ W ≤ 10), H (1 ≤ H ≤ 10).
One line contains "YES" or "NO" indicating whether the problem is solvable.
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