POJ1637 Sightseeing tour Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 7483 Accepted: 3115 Description The city executive board in Lund wants to construct a sightseeing tour by bus in Lund, so that tourists can see every corner of th
E{XE{Y|C}}=E{YE{X|C}} 现在有没有适合大学生用的搜题软件呢? https://www.zhihu.com/question/51935291/answer/514312093 Approach0 (https://approach0.xyz/search/) 专门用来搜索 Math StackExchange (支持数学公式). the if direction: https://math.stackexchange.com/questions/2494959/x-y-a
Graph Reconstruction Time Limit: 2 Seconds Memory Limit: 65536 KB Special Judge Let there be a simple graph with N vertices but we just know the degree of each vertex. Is it possible to reconstruct the graph only by these information? A sim