Issue 20 (2022)
Total problems: 126 — Solved: 0, Partially solved: 0, Open: 126.
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20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
20.10
20.11
20.12
20.13
20.14
20.15
20.16
20.17
20.18
20.19
20.20
20.21
20.22
20.23
20.24
20.25
20.26
20.27
20.28
20.29
20.30
20.31
20.32
20.33
20.34
20.35
20.36
20.37
20.38
20.39
20.40
20.41
20.42
20.43
20.44
20.45
20.46
20.47
20.48
20.49
20.50
20.51
20.52
20.53
20.54
20.55
20.56
20.57
20.58
20.59
20.60
20.61
20.62
20.63
20.64
20.65
20.66
20.67
20.68
20.69
20.70
20.71
20.72
20.73
20.74
20.75
20.76
20.77
20.78
20.79
20.80
20.81
20.82
20.83
20.84
20.85
20.86
20.87
20.88
20.89
20.90
20.91
20.92
20.93
20.94
20.95
20.96
20.97
20.98
20.99
20.100
20.101
20.102
20.103
20.104
20.105
20.106
20.107
20.108
20.109
20.110
20.111
20.112
20.113
20.114
20.115
20.116
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20.118
20.119
20.120
20.121
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20.124
20.125
20.126