Submission #682051

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
682051	2023-01-15 12:39:49	Kahou	Making Friends on Joitter is Fun (JOI20_joitter2)	C++14	100 / 100	814 ms	64716 KiB

joitter2

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/* In the name of God, aka Allah */
// let this be mytemp.cpp
#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define endl '\n'
#define mk make_pair
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int N = 1e5 + 50;
int n, m, id[N];
vector<int> vc[N];
set<int> adj[2][N], st[N];
queue<pii> q;
ll ans;
void uniset(int u, int v) {
  u = id[u], v= id[v];
  if (u == v) return;
  if (vc[u].size() < vc[v].size()) swap(u, v);
  ans -= 1ll*st[u].size()*vc[u].size();
  ans -= 1ll*st[v].size()*vc[v].size();
  ans += 2ll*vc[u].size()*vc[v].size();
  
 
 
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• Subtask 1: 1 / 1
• Subtask 2: 16 / 16
• Subtask 3: 83 / 83