题解

#include<iostream>
using namespace std;
int main()
{
    int a,b=2;
    cin>>a;
    if (a%2!=0)
    {
        cout<<-1;
    }
    else
    {
        while (a>0)
        {
            for(int i=2;i<=a;i*=2)
            {
                b*=2;
            }
            b/=2;
            cout<<b<<" ";
            a=a-b;
            b=2;
        }
    }
}

快点开看看吧！