一道水题,由于x坐标递增y坐标也递增于是前缀和统计即可,用树状数组实现. #include<bits/stdc++.h> using namespace std; const int maxn=15010; const int maxx=32010; inline long long read(){ long long x=0,f=1; char ch=getchar(); while(ch<'0'||ch>'9'){ if(ch=='-') f=-1; ch=getchar();…
Stars Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 39186 Accepted: 17027 Description Astronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let the level of a star b…
Stars Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 4052 Accepted Submission(s): 1592 Problem Description Astronomers often examine star maps where stars are represented by points on a plan…
Stars Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 37323 Accepted: 16278 Description Astronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let the level of a star b…
Stars Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 41521 Accepted: 18100 Description Astronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let the level of a st…