제출 #400724

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
400724	2021-05-08 15:06:05	Jasiekstrz	낙하산 고리들 (IOI12_rings)	C++17	37 / 100	1508 ms	142284 KiB

rings

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#include<bits/stdc++.h>
using namespace std;
const int N=1e6;
int n;
bool was_cycle;
set<int> ok;
vector<int> e[N+10];
int fau[N+10];
bool on_cycle[N+10];
bool vis[N+10];
int f(int x)
{
  if(fau[x]!=x)
    fau[x]=f(fau[x]);
  return fau[x];
}
void u(int x,int y)
{
  fau[f(y)]=f(x);
  return;
}
void set_all(bool c)
{
  ok.clear();
  if(c)
  {
    for(int i=0;i<n;i++)
      ok.insert(i);
  }
  return;
 
 
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