Submission #1109377

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1109377	2024-11-06 15:22:27	Ludissey	Nile (IOI24_nile)	C++17	0 / 100	36 ms	17480 KiB

nile

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#include "nile.h"
#include <bits/stdc++.h>
#define int long long
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
 
using namespace std;
vector<int> parent;
vector<int> sz;
vector<int> mn;
int sm=0;
int getParent(int x){
  if(parent[x]==x) return x;
  return parent[x]=getParent(parent[x]);
}
void unite(int a, int b){
  a=getParent(a); b=getParent(b);
  if(a==b) return;
  parent[b]=a;
  if(sz[a]<sz[b]) swap(a,b);
  if(sz[a]%2) sm-=mn[a];
  if(sz[b]%2) sm-=mn[b];
  sz[a]+=sz[b];
  mn[a]=min(mn[a],mn[b]);
  if(sz[a]%2) sm+=mn[a];
}
 
 
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