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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6. string s; cin >> s;
  7. cout << s;
  8. reverse(s.begin(), s.end());
  9. cout << s;
  10.  
  11. 	return 0;
  12. }
Success #stdin #stdout 0.01s 5312KB
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https://ideone.com/4oB3vQ
language:
C++14 (gcc 8.3)
created:
8 hours ago
visibility:
public

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