제출 #299087

#제출 시각아이디문제언어결과실행 시간메모리
299087TMJNRectangles (IOI19_rect)C++17
37 / 100
5035 ms326500 KiB
#include <bits/stdc++.h> #include "rect.h" using namespace std; set<int>sth[2500],stw[2500]; set<pair<int,int>>stph[2500],stpw[2500]; vector<pair<int,pair<int,int>>>p; int H,W,res; long long count_rectangles(vector<vector<int>>a){ H=a.size(); W=a[0].size(); for(int i=0;i<H;i++){ for(int j=0;j<W;j++){ p.push_back({a[i][j],{i,j}}); } } p.push_back({0xE869120,{-1,-1}}); sort(p.begin(),p.end()); for(int i=0;i<H;i++){ for(int j=-1;j<=W;j++){ sth[i].insert(j); } } for(int i=0;i<W;i++){ for(int j=-1;j<=H;j++){ stw[i].insert(j); } } for(int i=0;i<p.size()-1;i++){ if(i&&p[i-1].first==p[i].first)continue; for(int j=i;p[i].first==p[j].first;j++){ sth[p[j].second.first].erase(p[j].second.second); stw[p[j].second.second].erase(p[j].second.first); } vector<pair<pair<int,int>,pair<int,int>>>pp; for(int j=i;p[i].first==p[j].first;j++){ int lx,rx,ly,ry; auto it=sth[p[j].second.first].lower_bound(p[j].second.second); ry=*it; it--; ly=*it; auto it2=stw[p[j].second.second].lower_bound(p[j].second.first); rx=*it2; it2--; lx=*it2; lx++; rx--; ly++; ry--; if(lx<=0||ly<=0||H-1<=rx||W-1<=ry)continue; stph[p[j].second.first].insert({ly,ry}); stpw[p[j].second.second].insert({lx,rx}); } for(int j=i;p[i].first==p[j].first;j++){ int lx,rx,ly,ry; auto it=sth[p[j].second.first].lower_bound(p[j].second.second); ry=*it; it--; ly=*it; auto it2=stw[p[j].second.second].lower_bound(p[j].second.first); rx=*it2; it2--; lx=*it2; lx++; rx--; ly++; ry--; if(lx<=0||ly<=0||H-1<=rx||W-1<=ry)continue; bool f=true; for(int k=lx;k<=rx;k++){ if(stph[k].find({ly,ry})==stph[k].end()){ f=false; break; } } for(int k=ly;k<=ry;k++){ if(stpw[k].find({lx,rx})==stpw[k].end()){ f=false; break; } } if(f){ pp.push_back({{lx,rx},{ly,ry}}); } } sort(pp.begin(),pp.end()); pp.erase(unique(pp.begin(),pp.end()),pp.end()); res+=pp.size(); } return res; }

컴파일 시 표준 에러 (stderr) 메시지

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:32:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  for(int i=0;i<p.size()-1;i++){
      |              ~^~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...