#include<iostream>
#include<algorithm>
#include<queue>
#include<functional>
using namespace std;
int bit[10001];
int dist[100001];
inline int countbit(int n){
int cnt=0;
while(n){
if(n&1)cnt++;
n>>=1;
}
return cnt;
}


int main(void){
int N;
cin>>N;
for(int i=0;i<=N;i++){bit[i]=countbit(i);dist[i]=-1;}
queue<int> que;
dist[1]=1;
que.push(1);
while(que.empty()==false){
int v=que.front();que.pop();
if(v-bit[v]>0&&dist[v-bit[v]]==-1){
dist[v-bit[v]]=dist[v]+1;
que.push(v-bit[v]);
}
if(v+bit[v]<=N&&dist[v+bit[v]]==-1){
dist[v+bit[v]]=dist[v]+1;
que.push(v+bit[v]);
}

}
cout<<dist[N]<<endl;
return 0;
}