Submission #1209360

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209360		irmuun	The Potion of Great Power (CEOI20_potion)	C++20	14 / 100	454 ms	24012 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];
}

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<U;i++){
		if(mp[{A[i],B[i]}]==false){
			mp[{A[i],B[i]}]=true;
		}
		else{
			mp[{A[i],B[i]}]=false;
		}
	}
	for(auto [a,t]:mp){
		if(t==true){
			g[a.ff].pb(a.ss);
			g[a.ss].pb(a.ff);
		}
	}
	for(int i=0;i<N;i++){
		for(auto &x:g[i]){
			x=H[x];
		}
		sort(all(g[i]));
	}
}

int question(int x, int y, int v) {
	int ans=1e9;
	if(g[x].empty()||g[y].empty()) return ans;
	{
		int j=0;
		for(int i=0;i<g[x].size();i++){
			while(j<(int)g[y].size()&&g[y][j]<g[x][i]){
				j++;
			}
			if(j<(int)g[y].size()){
				ans=min(ans,g[y][j]-g[x][i]);
			}
		}
	}
	{
		int j=0;
		for(int i=0;i<g[y].size();i++){
			while(j<(int)g[x].size()&&g[x][j]<g[y][i]){
				j++;
			}
			if(j<(int)g[x].size()){
				ans=min(ans,g[x][j]-g[y][i]);
			}
		}
	}
	return ans;
}

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