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  1. #include <string>
  2. #include <iostream>
  3. #include <iterator>
  4.  
  5. template <typename InputIter, typename OutputIter>
  6. std::size_t make_dir_names(InputIter begin,
  7.                            InputIter end,
  8.                            OutputIter out,
  9.                            std::size_t group_size,
  10.                            char separator = '/')
  11. {
  12.     char buf[group_size];
  13.     std::size_t groups_consumed = 0;
  14.     for (;;) {
  15.         char *bufp = buf;
  16.          while (begin != end && bufp - buf < group_size) {
  17.             *bufp++ = *begin++;
  18.         }
  19.  
  20.         if (begin != end) {
  21.             if (groups_consumed) *out++ = separator;
  22.             for (bufp = buf; bufp - buf < group_size; ++bufp) {
  23.                 *out++ = *bufp;
  24.             }
  25.             ++groups_consumed;
  26.         } else {
  27.             return groups_consumed;
  28.         }
  29.     }
  30. }
  31.  
  32. int main()
  33. {
  34.     std::string s;
  35.     while (!std::cin.eof()) {
  36.         std::cin >> s;
  37.         make_dir_names(s.begin(), s.end(), std::ostream_iterator<char>(std::cout), 2);
  38.         std::cout << std::endl;
  39.     }
  40.     return 0;
  41. }
  42.  
Success #stdin #stdout 0s 3032KB
comments (?)
stdin 
2017991
658581
6585
stdout 
20/17/99
65/85
65
https://ideone.com/1XGMTD
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
secret

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