THUONG C++

#include <bits/stdc++.h>
using namespace std;
#define ll long long

int main()
{
    //freopen("a.inp","r",stdin);
   // freopen("a.out","w",stdout);
    ll m;
    cin>>m;
    int d;
    for(d=int(sqrt(m));d>=1;d--)
        if(m%d==0&&d*(d+1)<m&&d%2==1) break;
    cout<<(m/d);
}