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  1. dp = [[-1] * 3] * 6
  2.  
  3. def calculate(n, k):
  4. if n == k or k == 0:
  5. return 1
  6. dp[n][k] = calculate(n-1, k-1) + calculate(n-1, k)
  7. return dp[n][k]
  8.  
  9. print(calculate(5,2))
  10.  
Success #stdin #stdout 0.02s 28384KB
stdin
Standard input is empty
stdout
10