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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6.      int n;
  7.      cin >> n;
  8.       int i =0 ;
  9.       while (i<=n){
  10.       i++;
  11.       if(i%2==0){
  12.       cout << i << endl;
  13.       }
  14.       if (i%2!=0)
  15.       {
  16.       cout << "-1" << endl;
  17.       }
  18.       }
  19.       }
  20.  
  21.  
  22.  
Success #stdin #stdout 0s 5308KB
comments (?)
stdin 
10
stdout 
-1
2
-1
4
-1
6
-1
8
-1
10
-1
https://ideone.com/kL7mwW
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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