#include<iostream>
#include<vector>
using namespace std;

int main()
{
    int n;
    cin >> n;
    vector<int> child;
    for(int i = 1; i <= n; ++i) child.push_back(i);
    vector<int> ans;
    int index = 0;
    while(child.size() > 1){
        index = (index + 2) % child.size();
        ans.push_back(child[index]);
        child.erase(child.begin() + index);
    }
    cout << child[0];
    return 0;
}