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  1. //ssenseeeeeeeeeeeeeeeeeeeeeeeeeeeee
  2. #include<bits/stdc++.h>
  3. #define startt ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
  4. typedef unsigned long long ull;
  5. typedef long long  ll;
  6. #define MOD 1000000007
  7. #define MX 1000000000
  8. #define MXL 1000000000000000
  9. #define PI 3.14159265
  10. #define pb push_back
  11. using namespace std;
  12. #define sc second
  13. #define endl '\n'
  14. #define fr first
  15.  
  16. int main(){
  17.     ll n;
  18.     cin >> n;
  19.     int a[n+1];
  20.     for(int i = 0; i < n; i++)
  21.     {
  22.         cin >> a[i];
  23.     }
  24.     int evenpos = -1;
  25.     sort(a, a+n);
  26.     reverse(a, a+n);
  27.     for(int i = 0; i < n; i++)
  28.     {
  29.         if(a[i]%2 == 0)
  30.         {
  31.             evenpos = i;
  32.         }
  33.     }
  34.     if(evenpos == -1)
  35.     {
  36.         cout << -1 << endl;
  37.         return 0;
  38.     }
  39.     for(int i = 0; i < n; i++)
  40.     {
  41.         if(i == evenpos)
  42.         {
  43.             continue;
  44.         }
  45.         cout << a[i];
  46.     }
  47.     cout << a[evenpos] << endl;
  48. }
  49.  
Success #stdin #stdout 0s 4428KB
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https://ideone.com/fyDKc2
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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