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Number of Parallelograms CodeForces - 660D (几何)
Number of Parallelograms CodeForces - 660D You are given n points on a plane. All the points are distinct and no three of them lie on the same line....
2019-09-16
0
439
Number of Parallelograms CodeForces - 660D (几何)
Number of Parallelograms CodeForces - 660D You are given n points on a plane. All the points are distinct and no three of them lie on the same line...
2019-09-16
0
350
HH的项链 HYSBZ - 1878 (莫队/ 树状数组)
HH有一串由各种漂亮的贝壳组成的项链。HH相信不同的贝壳会带来好运,所以每次散步 完后,他都会随意取出一 段贝壳,思考它们所表达的含义。HH不断地收集新的贝壳,因此他的项链变得越来越长。有一天,他突然提出了一 个问题:某一段贝壳中,包含了多少种不同的贝壳?这个问题很难回答。。。因为项链实在是太长...
2019-09-13
0
452
HH的项链 HYSBZ - 1878 (莫队/ 树状数组)
HH有一串由各种漂亮的贝壳组成的项链。HH相信不同的贝壳会带来好运,所以每次散步 完后,他都会随意取出一 段贝壳,思考它们所表达的含义。HH不断地收集新的贝壳,因此他的项链变得越来越长。有一天,他突然提出了一 个问题:某一段贝壳中,包含了多少种不同的贝壳?这个问题很难回答。。。因为项链实在是太长...
2019-09-13
0
344
Diagonal Walking v.2 CodeForces - 1036B (思维,贪心)
Diagonal Walking v.2 CodeForces - 1036B Mikhail walks on a Cartesian plane. He starts at the point (0,0)(0,0), and in one move he can go to any of e...
2019-09-13
0
451
Diagonal Walking v.2 CodeForces - 1036B (思维,贪心)
Diagonal Walking v.2 CodeForces - 1036B Mikhail walks on a Cartesian plane. He starts at the point (0,0)(0,0), and in one move he can go to any of ...
2019-09-13
0
591
C - Covered Points Count CodeForces - 1000C (差分,离散化,统计)
C - Covered Points Count CodeForces - 1000C You are given nn segments on a coordinate line; each endpoint of every segment has integer coordinates. ...
2019-09-12
0
675
C - Covered Points Count CodeForces - 1000C (差分,离散化,统计)
C - Covered Points Count CodeForces - 1000C You are given nn segments on a coordinate line; each endpoint of every segment has integer coordinates....
2019-09-12
0
0
D - Yet Another Problem On a Subsequence CodeForces - 1000D (DP,组合数学)
D - Yet Another Problem On a Subsequence CodeForces - 1000D The sequence of integers a1,a2,…,aka1,a2,…,ak is called a good array if a1=k−1a1=k−1 and...
2019-09-12
0
497
D - Yet Another Problem On a Subsequence CodeForces - 1000D (DP,组合数学)
D - Yet Another Problem On a Subsequence CodeForces - 1000D The sequence of integers a1,a2,…,aka1,a2,…,ak is called a good array if a1=k−1a1=k−1 an...
2019-09-12
0
414
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