143165576
 1919020031
 1204252996
 210637432
 724264821
 1741
 619489590
 1199537418
 1075765759
 747976826
 638486017
 58438190
 1285316221
 186925426
 1180540990
 833393692
 1818960378
 2000000000
 0
 1309028227
 514714359
 624205168
 1795248373
 643201595
 1304312649

14 3 3 4 5 2 4 4 2 4 6 4 3 4 5 3 5 4 1 5 3 4 5 5 8
cnt = {
    '0': 1,
    '1': 0,
    '2': 0,
    '3': 0,
    '4': 1,
    '5': 0,
    '6': 1,
    '7': 0,
    '8': 2,
    '9': 1,
    'A': 1,
    'B': 2,
    'C': 0,
    'D': 1,
    'E': 0,
    'F': 0
}

a = int(input())
hexStr = hex(a).replace('0x', '').upper()
ans = sum([cnt[x] for x in hexStr])
print(ans)
