제출 #806589

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
806589	2023-08-04 08:10:44	Trisanu_Das	늑대인간 (IOI18_werewolf)	C++17	100 / 100	629 ms	158876 KiB

werewolf

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#include <bits/stdc++.h>
#include "werewolf.h"
using namespace std; 
 
#define vi vector<int>
 
const int mx = 6e5 + 5;
 
int par[mx], tin[mx], tout[mx], ti, id; vector<int> dsuAdj[mx]; set<int> nodes[mx];
 
int get(int i){ 
    return i == par[i] ? i : par[i] = get(par[i]); 
}
void merge(int a, int b, bool build){
    a = get(a); b = get(b); if (a == b) return;
    if (build){
        dsuAdj[id].push_back(a); dsuAdj[id].push_back(b);
        par[a] = par[b] = id++;
    }
    else{
        if (nodes[a].size() > nodes[b].size()) swap(a, b); 
        par[a] = b;
        nodes[b].insert(nodes[a].begin(), nodes[a].end());
    }
}
void dfs(int i){
    tin[i] = ti++;
    for (int x : dsuAdj[i]) dfs(x);
    tout[i] = ti - 1;
}
 
 
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• Subtask 4: 51 / 51