/in/foo.cc:59:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

VJ4Error('ProblemDataNotFoundError', '题目 590c9937d3d8a13210993a81 的数据未找到。', 'newbzoj', '590c9937d3d8a13210993a81')