求助：为什么强制转为int类型，原本能过样例，现在过不了？

#include<bits/stdc++.h>
using namespace std;
priority_queue<int , vector<int> , less <int > > _q;
priority_queue<int , vector<int> , greater <int> > __q;
int n,rubbish;
int main(){
    cin>>n>>rubbish;
    _q.push(rubbish);
    cout<<_q.top()<<endl;
    for(int i=2;i<=n;i++){
        int x;cin>>x;
        if(x>_q.top())__q.push(x);
        else _q.push(x);
        while(abs( int(_q.size()) - int(__q.size()) ) >1){
            if(_q.size()>__q.size()){
                __q.push(_q.top());
                _q.pop();
            }
            else{
                _q.push(__q.top());
                __q.pop();
            }
            if(i%2==1){
                if(_q.size()>__q.size())cout<<_q.top();
                else cout<<__q.top();
            }
        }
    }
    return 0;
}