#include <iostream>
#include <algorithm>
#include <queue>
using namespace std;

class range {private: struct I{int x;int operator*(){return x;}bool operator!=(I& lhs){return x<lhs.x;}void operator++(){++x;}};I i,n;
public:range(int n):i({0}),n({n}){}range(int i,int n):i({i}),n({n}){}I& begin(){return i;}I& end(){return n;}};

int main(void) {
  int n; scanf("%d", &n);
  queue<pair<int, int>> que;
  // 点番号、手数
  que.push(make_pair(1, 1));
  vector<int> memo(n+1, -1);
  int res = -1;
  while(!que.empty()) {
    pair<int, int> cur = que.front(); que.pop();
    int v = cur.first,
        cnt = cur.second;
    if(v == n) { res = cnt; break; }
    if(memo[v] != -1) { continue; }
    memo[v] = cnt;
    int x = __builtin_popcount(v);
    if(v+x <= n) { que.push(make_pair(v+x, cnt+1)); }
    if(v-x >= 1) { que.push(make_pair(v-x, cnt+1)); }
  }
  printf("%d\n", res);
  return 0;
}