Submission #813581

#	Time	Username	Problem	Language	Result	Execution time	Memory
813581		Edu175	Rarest Insects (IOI22_insects)	C++17	0 / 100	321 ms	208 KiB

insects

#include "insects.h"
#include <bits/stdc++.h>
#define pb push_back
#define fst first
#define snd second
#define fore(i,a,b) for(ll i=a,ioi=b;i<ioi;i++)
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(),x.end()
#define mset(a,v) memset((a),(v),sizeof(a))
#define imp(v) for(auto djfhg:v)cout<<djfhg<<" ";cout<<"\n"
using namespace std;
typedef long long ll;
typedef pair<ll,ll> ii;
//const ll MAXN=205;

void in(ll i){
	move_inside(i);
}
void out(ll i){
	move_outside(i);
}
ll ask(){
	return press_button();
}

int min_cardinality(int N){
	ll n=N;
	vector<ll>a;
	fore(i,0,n)a.pb(i),in(i);
	vector<ll>ban(n);
	ll mx;
	while(SZ(a)){
		mx=ask();
		fore(i,0,SZ(a)){
			out(a[i]);
			if(ask()<mx)ban[a[i]]=1;
			in(a[i]);
		}
		vector<ll>ai;
		for(auto i:a){
			if(!ban[i])ai.pb(i);
			else out(i);
		}
		a=ai;
	}
	return mx;
}

Compilation message (stderr)

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:46:9: warning: 'mx' may be used uninitialized in this function [-Wmaybe-uninitialized]
   46 |  return mx;
      |         ^~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 75