Submission #77731

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
77731	2018-09-30 06:03:03	autumn_eel	Circle selection (APIO18_circle_selection)	C++14	72 / 100	3044 ms	52732 KiB

circle_selection

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#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
#define INF INT_MAX
using namespace std;
typedef long long ll;
int ans[400000];
struct Circle{
  int x,y,r;
  int id;
  int bbox[2][2];
  Circle(){}
  Circle(int x,int y,int r,int id):x(x),y(y),r(r),id(id){
    bbox[0][0]=x-r;bbox[0][1]=y-r;
    bbox[1][0]=x+r;bbox[1][1]=y+r;
  }
};
struct node{
  int bbox[2][2];
  node*l,*r;
  vector<Circle*>circle;
};
ll area(int bbox[2][2]){
  return (bbox[1][0]-bbox[0][0])*(ll)(bbox[1][1]-bbox[0][1]);
}
void init(int bbox[2][2]){
  bbox[0][0]=bbox[0][1]=INF;
  bbox[1][0]=bbox[1][1]=-INF;
}
void mergeAABB(int bbox[2][2],int bbox2[2][2],int result[2][2]){
 
 
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Compilation message (stderr)

circle_selection.cpp: In function 'void build(std::vector<Circle*>&, node*)':
circle_selection.cpp:2:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,n)for(int i=0;i<(n);i++)
                              ^
circle_selection.cpp:63:3: note: in expansion of macro 'rep'
   rep(j,circle.size()){
   ^~~
circle_selection.cpp:73:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j+1<circle.size();j++){
               ~~~^~~~~~~~~~~~~~
circle_selection.cpp: In function 'node* intersect(node*, Circle*)':
circle_selection.cpp:2:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,n)for(int i=0;i<(n);i++)
                              ^
circle_selection.cpp:141:3: note: in expansion of macro 'rep'
   rep(i,circle.size()){
   ^~~
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:158:13: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int n;scanf("%d",&n);
        ~~~~~^~~~~~~~~
circle_selection.cpp:161:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int x,y,r;scanf("%d%d%d",&x,&y,&r);
             ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 0 / 15
• Subtask 4: 23 / 23
• Subtask 5: 30 / 30
• Subtask 6: 0 / 13