s = """1 8
2 16
3 24
4 32
5 40
6 48
7 392
8 400
9 408
10 416
11 424
12 432
13 440
14 784
15 792
16 800
17 808
18 816
19 824
20 832
21 1176
22 1184
23 1192
24 1200
25 1208
26 1216
27 1224
28 1568
29 1576
30 1584
31 1592
32 1600
33 1608
34 1616
35 1960
36 1968
37 1976
38 1984
39 1992
40 2000
41 2008
42 2352"""
dct = {}
for ss in s.split('\n'):
    a, b = ss.split()
    dct[a] = b
inp = input()
if inp in dct:
    print(dct[inp])
else:
    hoge = 1/0