import sys
from lib import *

data = int(open(0).read().strip())
part2 = True

def is_wall(x, y):
    v = x*x + 3*x + 2*x*y + y + y*y
    v += data
    bin_count = bin(v).count("1")
    if bin_count % 2 == 0:
        return False
    return True


seen = set()
poss = [(1, 1)]


for step in range(51):
    nposs = []
    for pos in poss:
        if pos in seen:
            continue
        seen.add(pos)
        if not part2 and pos == (31, 39):
            print(step)
            sys.exit(0)
        for (x, y) in [(-1, 0), (1, 0), (0, 1), (0, -1)]:
            nx, ny = pos[0] + x, pos[1] + y
            if nx >= 0 and ny >= 0 and not is_wall(nx, ny):
                nposs.append((nx, ny))
    poss = nposs

if part2:
    print(len(seen))