Submission #826836

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
826836	2023-08-16 05:17:20	ttamx	Rarest Insects (IOI22_insects)	C++17	100 / 100	51 ms	672 KiB

insects

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#include "insects.h"
#include<bits/stdc++.h>
using namespace std;
int min_cardinality(int n){
  vector<int> single;
  for(int i=0;i<n;i++){
    move_inside(i);
    if(press_button()>1){
      move_outside(i);
    }else{
      single.emplace_back(i);
    }
  }
  for(auto i:single)move_outside(i);
  int k=single.size();
  vector<int> cur(n);
  iota(cur.begin(),cur.end(),0);
  int l=1,r=n/k;
  int cnt=0;
  while(l<r){
    int m=(l+r+1)/2;
    vector<int> vl,vr;
    shuffle(cur.begin(),cur.end(),mt19937_64(time(nullptr)));
    for(auto i:cur){
      if(vl.size()+cnt==k*m){
        vr.emplace_back(i);
        continue;
      }
 
 
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Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:27:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |    if(vl.size()+cnt==k*m){
      |       ~~~~~~~~~~~~~^~~~~
insects.cpp:39:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   39 |   if(vl.size()+cnt==k*m){
      |      ~~~~~~~~~~~~~^~~~~

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