madaidao的专栏

题目链接：https://codeforces.com/contest/1523/problem/D题目大意：

题目链接A. The Two Routestime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputIn Absurdistan, there are n towns (

题目链接E. Wilbur and Stringstime limit per test3 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputWilbur the pig now wants to pla

题目链接Vertex Coverfrog has a graph with n vertices v(1),v(2),…,v(n) and m edges (v(a1),v(b1)),(v(a2),v(b2)),…,(v(am),v(bm)).She would like to color some vertices so that each edge has at least

6425 IntercityA couple of years ago the Ukrainian Railway System seemed to be very convenient. For any two citiesthere was a direct train (don't be confused with \directed"), which travelled betwe

题目链接Paint the Grid ReloadedTime Limit: 2 Seconds      Memory Limit: 65536 KB Leo has a grid with N rows and M columns. All cells are painted with either black or white initially.Tw

题目链接zhx and contestTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 546    Accepted Submission(s): 192Problem DescriptionAs

点击打开链接GemAnd PrinceTime Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 903    Accepted Submission(s): 314Problem DescriptionNowaday

题目链接Pushing BoxesTime Limit: 2000MS Memory Limit: 131072KTotal Submissions: 4617 Accepted: 1585 Special JudgeDescriptionImagine you are standing insid

题目链接

题目链接MazeTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 100000/100000 K (Java/Others)Total Submission(s): 82    Accepted Submission(s): 29Problem DescriptionThis story happened

6432 InuenceIn any society there are social inuence relations between individuals, where a person x can inuenceanother person y. The same is true for Softopia, a special society where social

题目链接Alice and BobTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1587    Accepted Submission(s): 575Problem DescriptionAlice and

题目链接B. Two Setstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputLittle X has n distinct integers: p1, 

http://acm.hdu.edu.cn/showproblem.php?pid=4876ZCC loves cardsTime Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1683    Accepted Submission

TripTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 2967 Accepted: 760DescriptionAlice and Bob want to go on holiday. Each of them has planned a route,

http://acm.hdu.edu.cn/showproblem.php?pid=3810