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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long n, res;
  6. 	while (cin >> n)
  7. 		res ^= n;
  8. 	cout << res;
  9. 	return 0;
  10. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/bibsxO
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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