제출 #828475

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
828475	2023-08-17 10:12:30	Pacybwoah	Stranded Far From Home (BOI22_island)	C++17	100 / 100	359 ms	41776 KiB

island

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#include<iostream>
#include<vector>
#include<algorithm>
#include<set>
#define ll long long
using namespace std;
vector<int> dsu,sz,ans;
vector<ll> sum;
vector<set<int> > nodes;
void build(int n){
    dsu.resize(n+1);
    sz.resize(n+1);
    for(int i=1;i<=n;i++) dsu[i]=i,sz[i]=1,nodes[i].insert(i);
}
int query(int x){
    if(dsu[x]==x) return x;
    return query(dsu[x]);
}
void unite(int a,int b,int ori){
    a=query(a),b=query(b);
    if(a==b) return;
    if(ori>sum[b]){
        for(auto x:nodes[b]){
                    ans[x]=0;
                }
                nodes[b].clear();
    }
    if(sz[a]<sz[b]) swap(a,b);
    dsu[b]=a;
    sz[a]+=sz[b];
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 30 / 30
• Subtask 5: 35 / 35