Submission #982228

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
982228	2024-05-14 03:59:31	boyliguanhan	Rarest Insects (IOI22_insects)	C++17	100 / 100	36 ms	956 KiB

insects

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//viewed solution
#include "insects.h"
#include<bits/stdc++.h>
using namespace std;
mt19937 rng(random_device{}());
vector<int>ins,notin,notin2;
int types,init=0;
bool check(int mid){
  ins.clear();
  notin2.clear();
  shuffle(notin.begin(),notin.end(),rng);
  for(auto i:notin){
    if(init==mid*types) {
      notin2.push_back(i);
      continue;
    }
    move_inside(i);
    if(press_button()>mid)
      move_outside(i),
      notin2.push_back(i);
    else init++,ins.push_back(i);
  }
  return init==mid*types;
}
int min_cardinality(int N) {
  for(int i=0;i<N;i++){
    move_inside(i);
    int val=press_button();
    if(val-1)
      notin.push_back(i),
 
 
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Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:39:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   39 |     int mid=l+r+1>>1;
      |             ~~~^~

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