n = int(input())

pls = [i+1 for i in range(n)]
bls = [str(bin(i+1)).count('1') for i in range(n)]

pp = 1
cnt = 1
while True:
    tp = pp + bls[pp-1]
    if tp == n:
        cnt += 1
        print(cnt)
        break    
    elif tp < n:
        pp += bls[pp-1]
        cnt += 1
        try:
            pls.remove(pp)
        except:
            print(-1)
            break            
    elif tp > n:
        pp -= bls[pp-1]
        cnt += 1
        try:
            pls.remove(pp)
        except:
            print(-1)