/in/foo.cc: In function 'int main()':
/in/foo.cc:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<strlen(ufo_name);i++) {
                 ~^~~~~~~~~~~~~~~~~
/in/foo.cc:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<strlen(group_name);i++){
                 ~^~~~~~~~~~~~~~~~~~~

VJ4Error('ProblemDataNotFoundError', '题目 591f044ed3d8a17e55ed60c6 的数据未找到。', 'Silly_Question_Bank', '591f044ed3d8a17e55ed60c6')