Submission #683374

#	Time	Username	Problem	Language	Result	Execution time	Memory
683374		irmuun	Rarest Insects (IOI22_insects)	C++17	Compilation error	0 ms	0 KiB

insects

#include<bits/stdc++.h>
#include "insects.h"
using namespace std;
int a[2005];
int min_cardinality(int n){
	pair<int,int>p[n*n+5];
	p[0].first=0;
	p[0].second=0;
	int tot=0;
	for(int i=0;i<n;i++){
		a[i]=i;
		for(int j=i+1;j<n;j++){
			tot++;
			p[tot].first=i;
			p[tot].second=j;
		}
	}
	for(int i=1;i<=tot;i++){
		move_outside(p[i-1].first);
		move_outside(p[i-1].second);
		move_inside(p[i].first);
		move_inside(p[i].second);
		int x=press_button();
		if(x==2){
			a[p[i].first]=a[p[j].first];
		}
	}
	int ans=0;
	for(int i=0;i<n;i++){
		int cur=0;
		for(int j=0;j<n;j++){
			if(a[j]==i){
				cur++;
			}
		}
		ans=max(ans,cur);
	}
	return ans;
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:25:22: error: 'j' was not declared in this scope
   25 |    a[p[i].first]=a[p[j].first];
      |                      ^