/in/foo.cc: In function 'void tarjan(int)':
/in/foo.cc:53:42: warning: for increment expression has no effect [-Wunused-value]
                 for (int j=nxt[i];j;nxt[j])
                                     ~~~~~^

VJ4Error('ProblemDataNotFoundError', '题目 590c9891d3d8a1321099379b 的数据未找到。', 'newbzoj', '590c9891d3d8a1321099379b')