18 lines
343 B
Python
18 lines
343 B
Python
import sys
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sys.setrecursionlimit(12000)
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N, K = map(int, input().split())
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Mem = [[0]*1001for i in range(1001)]
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def C(n, k):
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if n == 1:
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return 1
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elif k == 0 or k == n:
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return 1
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if Mem[n][k] != 0:
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return Mem[n][k]
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t = (C(n - 1, k) + C(n - 1, k - 1)) % 10007
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Mem[n][k] = t
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return t
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print(C(N, K))
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