题解

直接上代码：
#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;
}
}
}