제출 #418772

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
418772		peuch	늑대인간 (IOI18_werewolf)	C++17	0 / 100	4057 ms	15176 KiB

werewolf

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

const int MAXN = 2e5 + 10;

int n;
vector<int> rep, tam;
vector<int> ans;

void uni(int a, int b);
int find(int a);

vector<int> check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R){
	n = N;
	int q = L.size();
	int m = X.size();
	ans = vector<int> (q);
	for(int i = 0; i < m; i++)
		if(X[i] > Y[i]) swap(X[i], Y[i]);
	for(int i = 0; i < q; i++){	
		rep = vector<int> (2 * n);
		tam = vector<int> (2 * n, 1);
		for(int i = 0; i < 2 * n; i++)
			rep[i] = i;
		for(int j = 0; j < m; j++){
			if(X[j] <= R[i] && Y[j] <= R[i]){
				uni(2 * X[j] + 1, 2 * Y[j] + 1);
			}
			if(X[j] >= L[i] && Y[j] >= L[i]){
				uni(2 * X[j], 2 * Y[j]);
			}
		}
		for(int j = L[i]; j <= R[i]; j++)
			uni(2 * j, 2 * j + 1);
		ans[i] = find(2 * S[i]) == find(2 * E[i] + 1);
	}
	return ans;
}

void uni(int a, int b){
	a = find(a);
	b = find(b);
	if(a == b) return;
	if(tam[a] < tam[b]) swap(a, b);
	rep[b] = a;
	tam[a] += tam[b];
}

int find(int a){
	if(a == rep[a]) return a;
	return find(rep[a]);
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51