System Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:32:6: warning: unused variable 'mx' [-Wunused-variable]
int mx=0;
^~
VJ4Error('ProblemDataNotFoundError', '题目 590c987cd3d8a1321099373b 的数据未找到。', 'newbzoj', '590c987cd3d8a1321099373b')
