/in/foo.cc: In function 'int main()':
/in/foo.cc:14:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=1; i<s.length(); i++){
                ~^~~~~~~~~~~
/in/foo.cc:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int k=0; k<word.length(); k++){
                  ~^~~~~~~~~~~~~~
/in/foo.cc:19:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (i+k >= s.length() || s[i+k] != word[k]) {
         ~~~~^~~~~~~~~~~~~

VJ4Error('ProblemDataNotFoundError', '题目 58b7f460d3d8a1542f6d2bf4 的数据未找到。', 'nssy', '58b7f460d3d8a1542f6d2bf4')