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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     long long n , k ;
  6.     cin >> n;
  7.     cin >> k;
  8.     if(n % 2 == 0){
  9.         if(k <= (n / 2)){
  10.             k = (k * 2) - 1;
  11.             cout<< k;
  12.         }else{
  13.             k = ((k - (n / 2)) * 2);
  14.             cout<< k;
  15.         }
  16.     }else{
  17.        n = n + 1;
  18.        if(k <= (n / 2)){
  19.             k = (k * 2) - 1;
  20.             cout<< k;
  21.         }else{
  22.             k = ((k - (n / 2)) * 2);
  23.             cout<< k;
  24.         }
  25.     }
  26.     return 0;
  27. }
  28.  
Success #stdin #stdout 0s 4420KB
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stdin
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7 7
stdout
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6
https://ideone.com/s7CtXL
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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