백준 s4 2164 카드2 c++

https://www.acmicpc.net/problem/2164

 

/*boj s4 2164 카드2*/
#include <iostream>
#include <queue>

using namespace std;

int N;

int main(void)
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> N;

    queue<int> Q;
    for (int i = 1; i <= N; i++)
        Q.push(i);

    while (Q.size() != 1)
    {
        Q.pop();
        Q.push(Q.front());
        Q.pop();
    }

    cout << Q.front() << '\n';
}