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  1. #include<iostream>
  2. #include<algorithm>
  3. #define ll long long int
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     int t;
  9.     cin>>t;
  10.     while(t--)
  11.     {
  12.         ll i,j,k,l,m,n,b,odd=0,re=1;
  13.         cin>>n>>b;
  14.         for(i=0;i<=n;i++)
  15.         {
  16.             if(i==0)
  17.                 re=1;
  18.             else
  19.                 re*=i;
  20.             if(re>=b)
  21.             {
  22.                 ll temp;
  23.                 temp=re/b;
  24.                 re=re%b;
  25.                 if(temp%2==1)
  26.                 {
  27.                     if(i!=n)
  28.                     {
  29.                         if(i%2==0&&(i+2)>n)
  30.                         {
  31.                             odd++;
  32.                         }
  33.                     }
  34.                     else if(i==n)
  35.                     {
  36.                         odd++;
  37.                     }
  38.                 }
  39.             }
  40.         }
  41.         if(odd%2==0)
  42.         {
  43.             cout<<"Even\n";
  44.         }
  45.         else
  46.         {
  47.             cout<<"Odd\n";
  48.         }
  49.     }
  50.     return 0;
  51. }
  52.  
Success #stdin #stdout 0s 3344KB
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stdin
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2

3 6

2 1
stdout
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Odd
Even
https://ideone.com/aU4Rug
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
secret

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