#include <bits/stdc++.h>
using namespace std;
#define REP(i, n)           for(int(i)=0;(i)<(n);++(i))

const int INF = 1<<29;
int N;
int dp[10010];

int main(){
    cin >> N;
    REP(i,N+1) dp[i] = INF;
    dp[1] = 1;
    deque<int> q;
    q.push_back(1);

    while(!q.empty()){
        int i = q.front(); q.pop_front();
        int c = __builtin_popcount(i);
        if(i-c > 0 && dp[i-c] > dp[i] + 1){
            dp[i-c] = dp[i] + 1;
            q.push_back(i-c);
        }
        if(i+c <= N && dp[i+c] > dp[i] + 1){
            dp[i+c] = dp[i] + 1;
            q.push_back(i+c);
        }
    }
    int result = dp[N];
    if(result == INF) result = -1;
    cout << result << endl;
}