Programmers' kids solve this riddle in 5-10 minutes. How fast can you do it?
The input contains a single integer *n* (0 ≤ *n* ≤ 2000000000).
none
11
2
14
0
61441
2
571576
10
2128506
3
0
1
2000000000
4
143165576
14
1741
2
1919020031
3
1795248373
5
1818960378
5
1285316221
3
1309028227
5
1304312649
8
1180540990
5
1204252996
3
1199537418
4
1075765759
2
724264821
5
747976826
4
624205168
4
619489590
4
643201595
5
638486017
6
514714359
3
833393692
3
186925426
4
210637432
4
58438190
4
a = {'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}
s = 0
for i in hex(int(input())).replace('0x', ''):
	s += a[i]
print(s)