Submission #491658

#	Time	Username	Problem	Language	Result	Execution time	Memory
491658		Koosha_mv	medians (balkan11_medians)	C++14	100 / 100	97 ms	11872 KiB

medians

#include <bits/stdc++.h>
using namespace std;
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define print(v,r) f(i,0,r) cout<<v[i]<<" "; cout<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define Add(x,y) x=(x+y)%mod;
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=1e6+99;

int n,t,a[N],Mn[N],Mx[N],mark[N];
vector<int> ans;
set<int> s;

int prv(int x){
	int res=*prev(s.upper_bound(x));
	s.erase(res);
	return res;
}
int next(int x){
	int res=*s.lower_bound(x);
	s.erase(res);
	return res;	
}

int main(){
	ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	cin>>n;
	f(i,1,n+1){ cin>>a[i]; mark[a[i]]++; }
	f(i,1,2*n){
		if(!mark[i]){
			s.insert(i);
		}
	}

	f_(i,n,2){
		int u,v,mid=a[i],nmid=a[i-1];
		if(--mark[a[i]]==0) s.insert(a[i]);
		if(nmid==mid){
			u=prv(mid),v=next(mid);
		}
		if(nmid<mid){
			u=next(mid);
			v=next(u);
		}
		if(mid<nmid){
			u=prv(mid);
			v=prv(u);
		}
		ans.pb(u);
		ans.pb(v);
	}
	cout<<a[1]<<" ";
	f_(i,ans.size()-1,0){
		cout<<ans[i]<<" ";
	}
}

• Subtask 1: 65 / 65
• Subtask 2: 35 / 35