#include <stdio.h>
#define MOD (5000)


int main(void){
	int i,n;
	
	int st=0,goal=0;
	int next[5000];
	int s[10100];
	
	for(i=0;i<5000;i++){next[i]=0;}
	for(i=0;i<10100;i++){s[i]=-1;}
	
	scanf("%d", &n);
	
	s[1] = 1;
	next[goal] = 1;
	goal++;
	
	while(st!=goal){
		int bit=0,tmp;
		int nowPos = next[st];
		int nextPos;
		
		st = (st+1)%MOD;
		
		if( nowPos == n ){
			break;
		}
		
		tmp = nowPos;
		while(tmp>0){
			if(tmp%2 == 1){
				bit++;
			}
			tmp >>= 1;
		}
		
		nextPos = nowPos - bit;
		if( 1 <= nextPos && s[nextPos] == -1 ){
			next[goal] = nextPos;
			s[nextPos] = s[nowPos]+1;
			goal = (goal+1)%MOD;
		}
		
		nextPos = nowPos + bit;
		if( nextPos <= n && s[nextPos] == -1 ){
			next[goal] = nextPos;
			s[nextPos] = s[nowPos]+1;
			goal = (goal+1)%MOD;
		}
		
	}
	
	
	printf("%d\n", s[n]);
	return 0;
}