제출 #1047492

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1047492		vjudge1	Split the Attractions (IOI19_split)	C++17	11 / 100	39 ms	12880 KiB

split

#include "split.h"

#include<bits/stdc++.h>
using namespace std;

const int lim=200100;

#define pb push_back

vector<int>res;
int sszz;
int too;
bool vis[lim];

vector<int>v[lim];

void dfs(int node){
	if(!sszz||vis[node])return;
	vis[node]=1;
	res[node]=too;
	sszz--;
	for(int j:v[node]){
		dfs(j);
	}
}

int AA,BB,CC;

void dfs1(int node){
	if(vis[node])return;
	vis[node]=1;
	if(AA){
		res[node]=1;
		AA--;
	}else if(BB){
		res[node]=2;
		BB--;
	}else{
		res[node]=3;
		CC--;
	}
	for(int j:v[node]){
		dfs1(j);
	}
}

vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q) {
	res=vector<int>(n);
	int m=p.size();
	for(int i=0;i<m;i++){
		v[p[i]].pb(q[i]);
		v[q[i]].pb(p[i]);
	}
	if(a==1){
		if(b<c){
			fill(res.begin(),res.end(),3);
			too=2;
		}else{
			fill(res.begin(),res.end(),2);
			too=3;
		}
		sszz=min(b,c);
		dfs(0);
		for(int i=0;i<n;i++){
			if(res[i]!=too){
				res[i]=1;
				break;
			}
		}
	}
	bool ok=1;
	for(int i=0;i<n;i++){
		if(2<v[i].size()){
			ok=0;
			break;
		}
	}
	if(ok){
		AA=a,BB=b,CC=c;
		int root=0;
		for(int i=0;i<n;i++){
			if(v[i].size()==1){
				root=i;
			}
		}
		dfs1(root);
	}else{
	}
	return res;
}

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• Subtask 2: 11 / 11
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