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  1. #include <iostream>
  2. #include <string>
  3.  
  4. int main()
  5. {
  6.     std::string str;
  7.     std::getline(std::cin, str);
  8.     auto first_k = str.find_first_of("k");
  9.     auto last_c = str.find_last_of("c");
  10.     if ( first_k != std::string::npos  ) str[first_k] = 'c';
  11.     if ( last_c != std::string::npos ) str[last_c] = 'k';
  12.     std::cout << str;
  13.     return 0;
  14. }
Success #stdin #stdout 0s 2988KB
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stdin
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kkc
stdout
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ckk
https://ideone.com/uIK3Wx
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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