和P1242一样

code

#include<bits/stdc++.h>
using namespace std;
queue<int> q;
int n;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++) q.push(i);
	int i=1,t;
	while(!q.empty()){
		if(i%2==1){
			cout<<q.front()<<" ";
			q.pop();
		}
		else{
			q.push(q.front());
			q.pop();
		}
		i++;
	}
	return 0;
}