Submission #369618

#	Time	Username	Problem	Language	Result	Execution time	Memory
369618		YJU	Collapse (JOI18_collapse)	C++14	0 / 100	289 ms	2536 KiB

collapse

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector,Ofast")
using namespace std;
typedef int ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=2e5+5;
const ld pi=acos(-1);
//const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll n,dir[N];
set<pll> ms;

ll find(ll id){
	return (id==dir[id]?id:dir[id]=find(dir[id]));
}

vector<ll> simulateCollapse(ll _N,vector<ll> _T,vector<ll> _X,vector<ll> _Y,vector<ll> _W,vector<ll> _P){
	vector<ll> ans;
	n=_N;
	REP(i,SZ(_W)){
		ll cnt=n;
		ms.clear();
		REP1(j,n)dir[j]=j;
		REP(j,_W[i]+1){
			if(_T[j]==0){
				ms.insert(mp(_X[j],_Y[j]));
			}else{
				ms.erase(mp(_X[j],_Y[j]));
			}
		}
		for(auto j:ms){
			if(_P[i]<j.X||_P[i]<=j.Y){
				if(find(j.X)!=find(j.Y))--cnt;
				dir[find(j.X)]=find(j.Y);
			}
		}
		ans.pb(cnt);
	}
	return ans;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 35