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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int t;
  6. int n,k;
  7.  
  8. int main()
  9. {
  10.     cin>>t;
  11.     for (int i=0;i<t;i++)
  12.     {
  13.         cin>>n>>k;
  14.         double wynik=1;
  15.         double tab[n],tab1[n],tab2[n];
  16.         for (int i=1;i<=n;i++)
  17.         {
  18.             tab[i-1]=i;
  19.             if (i<=k) tab1[i-1]=i;
  20.             else tab1[i-1]=1;
  21.             if (i<=(n-k)) tab2[i-1]=i;
  22.             else tab2[i-1]=1;
  23.             wynik*=tab[i-1]/(tab1[i-1]*tab2[i-1]);
  24.         }
  25.         cout<<wynik<<endl;
  26.     }
  27.     return 0;
  28. }
  29.  
Success #stdin #stdout 0s 2684KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/P7tS5G
language:
C++ 4.3.2 (gcc-4.3.2)
created:
9 years ago
visibility:
secret

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