Given a sequence of N pairs of integers, find the length of the longest increasing subsequence of it. An increasing sequence A1..An is a sequence such that for every i < j, Ai < Aj. A subsequence of a sequence is a sequence that appears in the same…
排序,三关键字 去重 归并排序+树状数组 #include<bits/stdc++.h> using namespace std; #define re register int const int N=100010; const int M=200010; int n,m; struct node{ int a,b,c,s,res; bool operator < (node y) const { if(a==y.a&&b==y.b)return c<y.c; i…
CDQ分治2 CDQ套CDQ:四维偏序问题 题目来源:COGS 2479 偏序 #define LEFT 0 #define RIGHT 1 struct Node{int a,b,c,d,bg;}; Node q[_],tmp1[_],tmp2[_]; int aa,bb,cc,dd,n; long long Ans; void cdq2(RG int L,RG int R){ if(L == R)return; RG int mid = (L+R)>>1; cdq2(L,mid); cdq…
题目链接:[http://acm.split.hdu.edu.cn/showproblem.php?pid=5517] 题意:定义multi_set A<a , d>,B<c , d , e>,C<x , y , z>,给出 A , B ,定义 C = A * B = ={⟨a,c,d⟩∣⟨a,b⟩∈A, ⟨c,d,e⟩∈B and b=e} .求出C之后,求C中一个元素t[i]<a , b , c>是否存在一个元素tmp<x , y , z>使…
Jam's problem again Time Limit: 5000/2500 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 640 Accepted Submission(s): 210 Problem Description Jam like to solve the problem which on the 3D-axis,given N(1≤N≤100000)…
