测试都没错，就只有30分QAQ
by linzihan0313 @ 2021-08-09 11:11:15
@[linzihan0313](/user/535092) AC 代码↓
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
int a,b,c=1;
cin>>a;
if(a%2==1)
{
cout<<"-1";
return 0;
}
while(a>0)
{
c=1;
while(c<=a)
c*=2;
c/=2;
cout<<c<<" ";
a-=c;
}
// printf("\b");
return 0;
}
```
by Jiayn @ 2021-08-09 11:36:30
@[Jiayn](/user/267122) 谢谢
by linzihan0313 @ 2021-08-09 12:46:04