System Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:9:9: warning: unused variable 'f' [-Wunused-variable]
bool f=1;
^
VJ4Error('ProblemDataNotFoundError', '题目 590c9c36d3d8a13210993b65 的数据未找到。', 'newbzoj', '590c9c36d3d8a13210993b65')
