#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd(v) long v=0;{long _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}
#define wt(v) {ulong _z=v;do*--wp=_z%10+48;while(_z/=10);}
#define rrep(v,e) for(long v=e;v--;)

typedef unsigned long ulong;
char wbuf[1<<25];

long f0(){
	char rbuf[64];
	read(0,rbuf,sizeof rbuf);
	char*rp=rbuf;
	rd(n);
	return n;
}

int main(){
	ulong n=f0();
	if(!n){
		write(1,"-1",2);
		_exit(0);
	}
	long c=0;
	char*wp=wbuf+sizeof wbuf;
	for(ulong i=1ul<<50;i>>=1;){
		if(n&i){
			*--wp=' ';
			wt(i);
			n^=(i<<1)-1;
			++c;
		}
	}
	*--wp=' ';
	wt(c);
	write(1,wp,wbuf+sizeof wbuf-wp);
	_exit(0);
}