Submission #826857

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
826857	2023-08-16 05:31:00	ttamx	Rarest Insects (IOI22_insects)	C++17	100 / 100	54 ms	464 KiB

insects

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "insects.h"
#include<bits/stdc++.h>
using namespace std;
int min_cardinality(int n){
  vector<int> single,cur;
  for(int i=0;i<n;i++){
    move_inside(i);
    if(press_button()>1){
      cur.emplace_back(i);
      move_outside(i);
    }else{
      single.emplace_back(i);
    }
  }
  int k=single.size();
  int l=1,r=n/k;
  int cnt=k;
  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;
      }
      move_inside(i);
      if(press_button()>m){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:25:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   25 |    if(vl.size()+cnt==k*m){
      |       ~~~~~~~~~~~~~^~~~~
insects.cpp:37:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   37 |   if(vl.size()+cnt==k*m){
      |      ~~~~~~~~~~~~~^~~~~

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