Submission #1209364

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209364		irmuun	The Potion of Great Power (CEOI20_potion)	C++20	0 / 100	176 ms	34804 KiB

potion

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

const int maxn=2e5+5;

namespace {
	int N,D,H[maxn];
	int U,A[maxn],B[maxn];
	map<pair<int,int>,bool>mp;
	vector<int>g[maxn];
	int cnt[maxn][2];
	vector<array<int,3>>pr[maxn];
}

void init(int N, int D, int H[]) {
	::N=N,::D=D;
	for(int i=0;i<N;i++){
		::H[i]=H[i];
	}
}

void curseChanges(int U, int A[], int B[]) {
	::U=U;
	for(int i=0;i<U;i++){
		if(A[i]>B[i]) swap(A[i],B[i]);
		::A[i]=A[i];
		::B[i]=B[i];
	}
	mp.clear();
	for(int i=0;i<N;i++){
		g[i].clear();
	}
	for(int i=0;i<N;i++){
		pr[i].pb({0,0,0});
	}
	for(int i=0;i<U;i++){
		if(mp[{A[i],B[i]}]==false){
			mp[{A[i],B[i]}]=true;
			cnt[A[i]][H[B[i]]]++;
			cnt[B[i]][H[A[i]]]++;
		}
		else{
			mp[{A[i],B[i]}]=false;
			cnt[A[i]][H[B[i]]]--;
			cnt[B[i]][H[A[i]]]--;
		}
		pr[A[i]].pb({i,cnt[A[i]][0],cnt[A[i]][1]});
		pr[B[i]].pb({i,cnt[B[i]][0],cnt[B[i]][1]});
	}
}

int question(int x, int y, int v) {
	int ans=1e9;
	auto a=pr[x][upper_bound(all(pr[x]),array<int,3>{v,0,0})-pr[x].begin()-1];
	auto b=pr[y][upper_bound(all(pr[y]),array<int,3>{v,0,0})-pr[y].begin()-1];
	if((a[1]>0&&b[1]>0)||(a[2]>0&&b[2]>0)) ans=0;
	else if((a[1]>0&&b[2]>0)||(a[2]>0&&b[1]>0)) ans=1;
	return ans;
}

• Subtask 1: 0 / 0
• Subtask 2: 0 / 17
• Subtask 3: 0 / 14
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 30