Submission #439820

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
439820	2021-06-30 21:19:15	CSQ31	Road Closures (APIO21_roads)	C++17	100 / 100	818 ms	415760 KiB

roads

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#include "roads.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) (int)(a.size())
#define all(a) a.begin(),a.end()
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define INF (ll)(1e18)
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll a,ll b){if(!b)return a;else return gcd(b,a%b);}
const int MAXN = 2e5+5;
vector<vector<pii>> g1(MAXN),g2(MAXN); //g1 is original graph,g2 is subgraph after we deleted nodes with degree<=k
vector<int>par(MAXN),szz(MAXN,1),act(MAXN); //act means whether a node is active / has degree>k
vector<ll>ans;
VII dp(2,vector<ll>(MAXN,0));
int find(int x){
  if(x == par[x])return x;
  else return par[x] = find(par[x]);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 14 / 14
• Subtask 4: 10 / 10
• Subtask 5: 17 / 17
• Subtask 6: 25 / 25
• Subtask 7: 22 / 22