Standard input is empty

0 is even even
1 is even
2 is even even
3 is even
4 is even even
5 is even
6 is even even
7 is even
8 is even even
9 is even
10 is even even
11 is even
12 is even even
13 is even
14 is even even
15 is even
16 is even even
17 is even
18 is even even
19 is even
20 is even even
21 is even
22 is even even
23 is even
24 is even even
25 is even
26 is even even
27 is even
28 is even even
29 is even
30 is even even
31 is even
32 is even even
33 is even
34 is even even
35 is even
36 is even even
37 is even
38 is even even
39 is even
40 is even even
41 is even
42 is even even
43 is even
44 is even even
45 is even
46 is even even
47 is even
48 is even even
49 is even