输出不对

#include<bits/stdc++.h>
#include<queue>
using namespace std;
priority_queue<int> qmax;
priority_queue<int, vector<int>, greater<int> > qmin;
int main()
{
    int n, x, y; 
    cin >> n >> x;
    qmin.push(x);
    for(int i = 3; i <= n; i += 2)
    {
        cin >> x >> y;
        if(x > y)
            swap(x, y);
        qmin.push(x);
        qmax.push(y);
        if(qmin.top() > qmax.top())
        {
            int a = qmin.top(); qmin.pop();
            int b = qmax.top(); qmax.pop();
            qmin.push(b);
            qmax.push(a);
        }
        cout << qmin.top() << "\n";
    }
    return 0;
}