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#include <cstdio>

unsigned int countSetBits(unsigned int n)
{
    unsigned int count = 0;
    while (n) {
        count += n & 1;
        n >>= 1;
    }
    return count;
}

int main(){
	int n,i,j,bts=0,sparebits, cnt2;
	scanf("%d",&n);
	
	int count = 0,b1;
	for(i=1; i<=n;i++){	
		count = countSetBits(i);
//		printf("i= %d = %d\n",i,count);
	    bts+=count;
	    if(bts>=n)break;
	}
//	printf("%d ",bts);
//	printf("%d ",i);
	sparebits=bts-n;
	cnt2=0;
	for(j=i;j>0;j--){
		if(sparebits>0){
			count = countSetBits(j);
		    if(count>sparebits){
		    	cnt2++;
			}
			else{
				sparebits-=count;
			}
		}
		else
			cnt2++;
	}
	printf("%d\n",cnt2);
	
	sparebits=bts-n;
	for(j=i;j>0;j--){
		if(sparebits>0){
			count = countSetBits(j);
		    if(count>sparebits){
		    	printf("%d ",j);
			}
			else{
				sparebits-=count;
			}
		}
		else
		    printf("%d ",j);
	}
	return 0;
	
}