#include<bits/stdc++.h>
#include <atcoder/all>
#ifdef LOCAL
#include <debug_print.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif
using namespace atcoder;
using mint=modint1000000007;
using namespace std;
using ll=long long;
using ul=unsigned long long;
int dx[9] = {-1, 1, 0, 0, -1, -1, 1, 1, 0};
int dy[9] = {0, 0, -1, 1, -1, 1, -1, 1, 0};
using Graph=vector<vector<int>>;
ll op(ll a,ll b){return min(a,b);}
ll e(){return 2e9;}
int main(){
	int N;
	cin>>N;
	vector<int>vi(N+1,-1);
	queue<int>q;
	q.push(1);
	vi[1]=1;
	while(!q.empty()){
		int v=q.front();
		q.pop();
		if(v+__popcount(v)<N+1&&vi[v+__popcount(v)]==-1)vi[v+__popcount(v)]=vi[v]+1,q.push(v+__popcount(v));
		if(v-__popcount(v)>0&&vi[v-__popcount(v)]==-1)vi[v-__popcount(v)]=vi[v]+1,q.push(v-__popcount(v));
	}
	cout<<vi[N]<<endl;
}