Created
September 29, 2015 10:22
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| memo = {} | |
| def p(n,k): | |
| if (n,k) in memo: return memo[n,k] | |
| if (n,k) == (0,0): return 1 | |
| if n < k or (n > 0 and k == 0): return 0 | |
| memo[n,k] = p(n-k,k) + p(n-1,k-1) | |
| return memo[n,k] |
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