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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. string s; 
  7. cin >> s;
  8. for ( int I=0;I<s.size();)
  9. {
  10.   int j=I; 
  11. while((j<s.size())and (s[j]==s[I]))
  12. j++;
  13. if(j==I+1) cout<<s[I]; 
  14.  I=j;
  15. }
  16. 	return 0;
  17. }
Success #stdin #stdout 0.01s 5420KB
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https://ideone.com/E64Sxm
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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