제출 #374635

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
374635	2021-03-07 17:29:05	gratus907	문명 (KOI17_civilization)	C++17	0 / 100	1116 ms	322076 KiB

civilization

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#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#define ll long long
#define eps 1e-7
#define all(x) ((x).begin()),((x).end())
#define usecppio ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
using pii = pair<int, int>;
const int V = 101010;
struct DSU
{
    int par[V], sz[V];
    DSU(){init(V);}
    void init(int n)
    {
        for (int i = 0; i<n; i++)
            par[i] = i, sz[i] = 1;
    }
    int find(int x)
    {
        return x == par[x] ? x : (par[x] = find(par[x]));
    }
    void unite(int x, int y)
    {
        int u=find(x), v=find(y);
        if(u==v) return;
        if(sz[u]>sz[v]) swap(u, v);
 
 
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