Submission #627506

#	Time	Username	Problem	Language	Result	Execution time	Memory
627506		inwbear	Rarest Insects (IOI22_insects)	C++17	42.91 / 100	245 ms	464 KiB

insects

#include "insects.h"
#include<bits/stdc++.h>
#define pb push_back
#define F first
#define S second
using namespace std;

int cc[2005],re,sq,rr;
pair<int,int>pos[2005];
bool ins[2005];

int min_cardinality(int N) {
  re=N;
  vector<int>v;
  vector<pair<int,int> >fr;
  for(int i=0;i<N;i++){
    move_inside(i);
    if(press_button()>1){
      move_outside(i);
      fr.pb({i,false});
    }
    else v.pb(i),ins[i]=true;
  }
  if(v.size()!=(int)sqrt(v.size())*(int)sqrt(v.size()))sq=(int)sqrt(v.size())+1;
  else sq=(int)sqrt(v.size());
  for(int i=0;i<v.size();i++)move_outside(v[i]);
  for(int i=sq;i<v.size();i+=sq){
    rr=0;
    for(int j=i;j<v.size()&&j<i+sq;j++){
      rr++;
      move_inside(v[j]);
    }
    for(int j=0;j<fr.size();j++){
      if(fr[j].S)continue;
      move_inside(fr[j].F);
      if(press_button()>1){
        fr[j].S=true;
        rr--;
        pos[fr[j].F].F=i/sq;
      }
      move_outside(fr[j].F);
    }
    for(int j=i;j<v.size()&&j<i+sq;j++){
      move_outside(v[j]);
    }
    if(rr>0)return 1;
  }
  for(int j=0;j<fr.size();j++)fr[j].S=true;
  for(int i=1;i<sq;i++){
    rr=0;
    for(int j=i;j<v.size();j+=sq){
      move_inside(v[j]);
      rr++;
    }
    for(int j=0;j<fr.size();j++){
      if(!fr[j].S)continue;
      move_inside(fr[j].F);
      if(press_button()>1){
        fr[j].S=false;
        pos[fr[j].F].S=i;
        rr--;
      }
      move_outside(fr[j].F);
    }
    for(int j=i;j<v.size();j+=sq){
      move_inside(v[j]);
    }
    if(rr>0)return 1;
  }
  //for(int i=0;i<v.size();i++)printf("{%d}",v[i]);
  //for(int i=0;i<fr.size();i++)printf("[%d %d]",pos[fr[i].F].F,pos[fr[i].F].S);
  for(int i=0;i<fr.size();i++){
    cc[v[(pos[fr[i].F].F*sq)+pos[fr[i].F].S]]++;
  }
  for(int i=0;i<v.size();i++)re=min(re,cc[v[i]]+1);
  return re;
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:24:14: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   24 |   if(v.size()!=(int)sqrt(v.size())*(int)sqrt(v.size()))sq=(int)sqrt(v.size())+1;
      |      ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
insects.cpp:26:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |   for(int i=0;i<v.size();i++)move_outside(v[i]);
      |               ~^~~~~~~~~
insects.cpp:27:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   for(int i=sq;i<v.size();i+=sq){
      |                ~^~~~~~~~~
insects.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for(int j=i;j<v.size()&&j<i+sq;j++){
      |                 ~^~~~~~~~~
insects.cpp:33:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int j=0;j<fr.size();j++){
      |                 ~^~~~~~~~~~
insects.cpp:43:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for(int j=i;j<v.size()&&j<i+sq;j++){
      |                 ~^~~~~~~~~
insects.cpp:48:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |   for(int j=0;j<fr.size();j++)fr[j].S=true;
      |               ~^~~~~~~~~~
insects.cpp:51:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     for(int j=i;j<v.size();j+=sq){
      |                 ~^~~~~~~~~
insects.cpp:55:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for(int j=0;j<fr.size();j++){
      |                 ~^~~~~~~~~~
insects.cpp:65:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |     for(int j=i;j<v.size();j+=sq){
      |                 ~^~~~~~~~~
insects.cpp:72:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |   for(int i=0;i<fr.size();i++){
      |               ~^~~~~~~~~~
insects.cpp:75:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |   for(int i=0;i<v.size();i++)re=min(re,cc[v[i]]+1);
      |               ~^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 17.91 / 75