Factorization corrected

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Problem

given two numbers a and b, calculate x and y where x+y=a and x*y=b and x<=y.

Options

exec is denied

now post-mortem time, all source codes will be revealed

Sample input:_

1 0
3 2
5 6
7 12
9 20
11 30
13 42
15 56
17 72
9 0
0 0
2 1
4 4
6 9
8 16
10 25
12 36
14 49
16 64
18 81
17 42
107 1380
100 2275
168 7031
70 1216
72 1196
81 1634
111 2528
78 1400
103 1596
140 4899
132 3627
85 750
78 1160
146 4753
103 2596
32 60
94 1248
102 2480
106 1720
45 486
46 504
73 1260
135 4050
76 1219
88 1680
145 5254
61 910
111 3038
134 4389
94 1680
162 6417
158 5841
106 2793
162 6336
103 2052
112 2880
82 456
65 1050
82 1645
17 16
113 2640
185 8526
138 4361
96 2304
65 900
14 48
11 24
108 2795
144 5103
24 119
50 600
170 7189
137 4560
148 5332
24 63
9 20
90 344
92 1540
112 3120
74 1288
108 1620
73 1176
77 490
27 140
61 820
128 3471
48 407
95 2256
45 200
88 640
113 2850
159 6188
96 1575
89 1638
100 2356
57 770
129 3348
110 1581
81 80

Sample output:

0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
0 9
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
3 14
15 92
35 65
79 89
32 38
26 46
38 43
32 79
28 50
19 84
69 71
39 93
10 75
20 58
49 97
44 59
2 30
16 78
40 62
20 86
18 27
18 28
28 45
45 90
23 53
28 60
71 74
26 35
49 62
57 77
24 70
69 93
59 99
49 57
66 96
27 76
40 72
6 76
30 35
35 47
1 16
33 80
87 98
49 89
48 48
20 45
6 8
3 8
43 65
63 81
7 17
20 30
79 91
57 80
62 86
3 21
4 5
4 86
22 70
52 60
28 46
18 90
24 49
7 70
7 20
20 41
39 89
11 37
47 48
5 40
8 80
38 75
68 91
21 75
26 63
38 62
22 35
36 93
17 93
1 80

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