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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int dp[1000];
  5. int bio(int n, int r) {
  6.     if(n == 1 ||n == 0 || (n == r)||(n == n && r == 0))
  7.         return 1;
  8.     else if(dp[n] == 0) {
  9.        dp[n]  = bio(n - 1, r -1) + bio(n -1 ,r);
  10.        return dp[n];
  11.  
  12.     }
  13.  
  14. }
  15. int main()
  16. {
  17.     int x, n, r;
  18.     scanf("%i %i", &n, &r);
  19.     x = bio(n, r);
  20.  
  21.     printf("%i\n", x);
  22.  
  23.     return 0;
  24.  
  25. }
  26.  
Success #stdin #stdout 0s 3348KB
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https://ideone.com/o0Jzc4
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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