/in/foo.cc: In function 'int merge(int, int)':
/in/foo.cc:60:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

VJ4Error('ProblemDataNotFoundError', '题目 590c9949d3d8a13210993ad1 的数据未找到。', 'newbzoj', '590c9949d3d8a13210993ad1')