Submission #51831

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
51831	2018-06-21 12:40:52	istlemin	One-Way Streets (CEOI17_oneway)	C++14	100 / 100	1905 ms	113964 KiB

oneway

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#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = a; i<int(b);++i)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define trav(a,c) for(auto a: c)
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pii;
class UnionFind {
public:
  vi p;
    vi r;
  UnionFind(ll n){
        p.resize(n);
        r.resize(n,1);
        rep(i,0,n) p[i] = i;
  }
  ll find(ll v){
        return p[v]==v?v:p[v]=find(p[v]);
  }
    void join(ll a,ll b){
        a = find(a); b = find(b);
        if(r[a]>r[b]) p[b] = a;
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40