foo.cc: In function 'int zixulie(std::string, int)':
foo.cc:25:13: error: 'amyfind' was not declared in this scope; did you mean 'myfind'?
   25 |  while(i<n&&amyfind(s,s[i])<k)
      |             ^~~~~~~
      |             myfind
foo.cc: In function 'int main()':
foo.cc:36:6: warning: unused variable 'n' [-Wunused-variable]
   36 |  int n=s.length();
      |      ^

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