Main.cc: In function 'void dfs(int)':
Main.cc:6:8: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
    6 |  if (n == strlen(x))
      |      ~~^~~~~~~~~~~~
Main.cc: In function 'int main()':
Main.cc:26:2: error: 'gets' was not declared in this scope; did you mean 'fgets'?
   26 |  gets(x);
      |  ^~~~
      |  fgets