Standard input is empty

1 * 1 = 1
2 * 2 = 4
3 * 3 = 9
4 * 4 = 16
5 * 5 = 25
6 * 6 = 36
7 * 7 = 49
8 * 8 = 64
9 * 9 = 81
10 * 10 = 100
11 * 11 = 121
12 * 12 = 144
13 * 13 = 169
14 * 14 = 196
15 * 15 = 225
16 * 16 = 256
17 * 17 = 289
18 * 18 = 324
19 * 19 = 361
20 * 20 = 400
21 * 21 = 441
22 * 22 = 484
23 * 23 = 529
24 * 24 = 576
25 * 25 = 625
26 * 26 = 676
27 * 27 = 729
28 * 28 = 784
29 * 29 = 841
30 * 30 = 900
31 * 31 = 961
32 * 32 = 1024
33 * 33 = 1089
34 * 34 = 1156
35 * 35 = 1225
36 * 36 = 1296
37 * 37 = 1369
38 * 38 = 1444
39 * 39 = 1521
40 * 40 = 1600
41 * 41 = 1681
42 * 42 = 1764
43 * 43 = 1849
44 * 44 = 1936
45 * 45 = 2025
46 * 46 = 2116
47 * 47 = 2209
48 * 48 = 2304
49 * 49 = 2401
50 * 50 = 2500
51 * 51 = 2601
52 * 52 = 2704
53 * 53 = 2809
54 * 54 = 2916
55 * 55 = 3025
56 * 56 = 3136
57 * 57 = 3249
58 * 58 = 3364
59 * 59 = 3481
60 * 60 = 3600
61 * 61 = 3721
62 * 62 = 3844
63 * 63 = 3969
64 * 64 = 4096
65 * 65 = 4225
66 * 66 = 4356
67 * 67 = 4489
68 * 68 = 4624
69 * 69 = 4761
70 * 70 = 4900
71 * 71 = 5041
72 * 72 = 5184
73 * 73 = 5329
74 * 74 = 5476
75 * 75 = 5625
76 * 76 = 5776
77 * 77 = 5929
78 * 78 = 6084
79 * 79 = 6241
80 * 80 = 6400