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#include <stdio.h>
#define LIMIT 1000000

int ans[LIMIT];
int ansl = 0;
int memo[LIMIT];


int nbits(unsigned int u){
  unsigned int uCount;
  uCount = u - ((u >> 1) & 033333333333) - ((u >> 2) & 011111111111);
  return ((uCount + (uCount >> 3)) & 030707070707) % 63;
}

int main() {
  int n, nn;
  scanf("%d", &n);
  nn = n;
  unsigned sum = 0, num = 0;
  while(sum < n) {
    num++;
    memo[num-1] = nbits(num);
    sum += memo[num-1];
  }
  ans[ansl++] = num;
  nn -= memo[num-1];
  sum -= memo[num-1];
  while(nn) {
    num--;
    if(sum >= nn && sum-memo[num-1] < nn) {
      nn -= memo[num-1];
      ans[ansl++] = num;
    }
    sum -= memo[num-1];
  }
  printf("%d\n", ansl);
  //int chk = 0;
  for(int i=0;i<ansl;i++) {
    printf("%d ", ans[i]);
    //chk += nbits(ans[i]);
  }
  //printf("%d\n", chk);

  return 0;
}