Submission #790886

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
790886	2023-07-23 09:14:45	esomer	Stranded Far From Home (BOI22_island)	C++17	100 / 100	165 ms	24368 KiB

island

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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
struct DSU{
  vector<int> v;
  vector<ll> sum;
  vector<ll> ans;
  vector<int> lst;
  
  void init(vector<pair<int, int>>& a){
    int n = (int)a.size();
    v.assign(n, -1);
    sum.assign(n, 0);
    ans.resize(n);
    lst.resize(n);
    for(int i = 0; i < n; i++){
      sum[a[i].second] = a[i].first;
      ans[a[i].second] = a[i].first;
      lst[a[i].second] = a[i].second;
    }
  }
  int get(int x){return v[x] < 0 ? x : v[x] = get(v[x]);}
  
  void unite(int x, int y, pair<int, int> val){
    x = get(x); y = get(y);
    if(x == y) return;
    if(v[x] > v[y]) swap(x, y);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 30 / 30
• Subtask 5: 35 / 35