//杉月
#include<bits/stdc++.h>
#define N 100005
//#define double   long double
//#define int  long long
using namespace std;
typedef long long LL;
int n;
int a[N];
priority_queue<LL>Q;int sum;
priority_queue<LL,vector<LL>,greater<LL> >q;
void move(int m){
	while(sum<m&&q.size()){
		Q.push(q.top());sum++;
		q.pop();
	}
}

void work(){
	for(int i=1;i<=n;i++){
		q.push(a[i]);
		if(sum)
			while(Q.top()>q.top()){
				q.push(Q.top());Q.pop();sum--;
			}
		
		if(i%2==1){
			move((i+1)/2);
			cout<<Q.top()<<endl;
		}
	}
}
signed main(){
	//freopen("detect2.in","r",stdin);
	//freopen("detect.out","w",stdout);
	ios::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	work();
	//fclose(stdin);
	//fclose(stdout);
    return 0;
}

为什么全是MLE,不理解。