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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     int n,i;
  6.     cin>>n;
  7.     long long int arr[n];
  8.     for(i=0;i<n;i++)
  9.         cin>>arr[i];
  10.     long long int a,ans;
  11.     a=arr[0];
  12.     for(i=1;i<n;i++)
  13.     {
  14.         ans=a^arr[i];
  15.         a=ans;
  16.     }
  17.     cout<<ans;
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0s 5416KB
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stdin
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https://ideone.com/41a8Jj
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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