求助大佬们，一个点3过不去

#include<iostream>
#include<cmath>
using namespace std;
int main()
{
	int a,c;
	bool q=false;
	cin>>a;
	cout<<(int)log2(a)+1<<endl;
	if(log2(a+1)-1==(int)(log2(a)))
	{
		for(int i=1;i<=pow(2,log2(a));i*=2)
		{
			cout<<i<<" ";
		}
		return 0;
	}
	c=a-pow(2,(int)log2(a))+1;
	for(int i=1;i<=pow(2,(int)log2(a)-1);i*=2)
	{
		cout<<i<<" ";
		if(c>=i&&c<=i*2&&!q)
		{
			cout<<c<<" ";
			q=true;
		}
	}
	return 0;
}