Submission #710931

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
710931	2023-03-16 05:34:47	emptypringlescan	Stranded Far From Home (BOI22_island)	C++17	100 / 100	307 ms	41256 KiB

island

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#include <bits/stdc++.h>
using namespace std;
#define int long long
int par[200005];
long long men[200005];
vector<int> sz[200005];
int find(int x){
  if(par[x]==x) return x;
  return par[x]=find(par[x]);
}
void merge(int x, int y){
  if(find(x)==find(y)) return;
  x=find(x); y=find(y);
  assert(x<200005&&y<200005);
  if(sz[x].size()<=sz[y].size()){
    for(int i:sz[x]) sz[y].push_back(i);
    sz[x].clear();
  }
  else{
    for(int i:sz[y]) sz[x].push_back(i);
    swap(sz[x],sz[y]);
    sz[x].clear();
  }
  men[y]+=men[x];
  men[x]=0;
  par[x]=y;
}
int32_t main(){
  ios::sync_with_stdio(0);
  cin.tie(0);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 30 / 30
• Subtask 5: 35 / 35