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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. unordered_map <int, int> hm;
  4. int main()
  5. {
  6.     int n; cin >> n; int a[n];
  7.     for(int i=0; i<n; i++)
  8.     {
  9.         cin >> a[i];
  10.         hm[a[i]]++;
  11.     }
  12.     int *arr= new int, index=0;
  13.     for(auto it=hm.begin(); it!=hm.end(); it++)
  14.     {
  15.         if(it->second==1)
  16.         {
  17.             arr[index++]=it->first;
  18.         }
  19.     }
  20.     for(int i=index-1; i>=0; i--) cout << arr[i] << " ";
  21. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
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9
1 2 3 4 5 6 7 8 9
stdout
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4 0 4113 1 5 6 7 8 9
https://ideone.com/KIpF4N
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
secret

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