solution
MFEM mesh v1.0

#
# MFEM Geometry Types (see mesh/geom.hpp):
#
# POINT       = 0
# SEGMENT     = 1
# TRIANGLE    = 2
# SQUARE      = 3
# TETRAHEDRON = 4
# CUBE        = 5
# PRISM       = 6
#

dimension
3

elements
24
1 6 0 1 2 3 4 5
1 6 6 7 8 9 10 11
1 6 12 13 14 15 16 17
1 6 18 19 20 21 22 23
1 6 24 25 26 27 28 29
1 6 30 31 32 33 34 35
1 6 36 37 38 39 40 41
1 6 42 43 44 45 46 47
1 6 48 49 50 51 52 53
1 6 54 55 56 57 58 59
1 6 60 61 62 63 64 65
1 6 66 67 68 69 70 71
1 6 72 73 74 75 76 77
1 6 78 79 80 81 82 83
1 6 84 85 86 87 88 89
1 6 90 91 92 93 94 95
1 6 96 97 98 99 100 101
1 6 102 103 104 105 106 107
1 6 108 109 110 111 112 113
1 6 114 115 116 117 118 119
1 6 120 121 122 123 124 125
1 6 126 127 128 129 130 131
1 6 132 133 134 135 136 137
1 6 138 139 140 141 142 143

boundary
120
1 2 0 2 1
1 2 3 4 5
1 3 0 1 4 3
1 3 1 2 5 4
1 3 2 0 3 5
1 2 6 8 7
1 2 9 10 11
1 3 6 7 10 9
1 3 7 8 11 10
1 3 8 6 9 11
1 2 12 14 13
1 2 15 16 17
1 3 12 13 16 15
1 3 13 14 17 16
1 3 14 12 15 17
1 2 18 20 19
1 2 21 22 23
1 3 18 19 22 21
1 3 19 20 23 22
1 3 20 18 21 23
1 2 24 26 25
1 2 27 28 29
1 3 24 25 28 27
1 3 25 26 29 28
1 3 26 24 27 29
1 2 30 32 31
1 2 33 34 35
1 3 30 31 34 33
1 3 31 32 35 34
1 3 32 30 33 35
1 2 36 38 37
1 2 39 40 41
1 3 36 37 40 39
1 3 37 38 41 40
1 3 38 36 39 41
1 2 42 44 43
1 2 45 46 47
1 3 42 43 46 45
1 3 43 44 47 46
1 3 44 42 45 47
1 2 48 50 49
1 2 51 52 53
1 3 48 49 52 51
1 3 49 50 53 52
1 3 50 48 51 53
1 2 54 56 55
1 2 57 58 59
1 3 54 55 58 57
1 3 55 56 59 58
1 3 56 54 57 59
1 2 60 62 61
1 2 63 64 65
1 3 60 61 64 63
1 3 61 62 65 64
1 3 62 60 63 65
1 2 66 68 67
1 2 69 70 71
1 3 66 67 70 69
1 3 67 68 71 70
1 3 68 66 69 71
1 2 72 74 73
1 2 75 76 77
1 3 72 73 76 75
1 3 73 74 77 76
1 3 74 72 75 77
1 2 78 80 79
1 2 81 82 83
1 3 78 79 82 81
1 3 79 80 83 82
1 3 80 78 81 83
1 2 84 86 85
1 2 87 88 89
1 3 84 85 88 87
1 3 85 86 89 88
1 3 86 84 87 89
1 2 90 92 91
1 2 93 94 95
1 3 90 91 94 93
1 3 91 92 95 94
1 3 92 90 93 95
1 2 96 98 97
1 2 99 100 101
1 3 96 97 100 99
1 3 97 98 101 100
1 3 98 96 99 101
1 2 102 104 103
1 2 105 106 107
1 3 102 103 106 105
1 3 103 104 107 106
1 3 104 102 105 107
1 2 108 110 109
1 2 111 112 113
1 3 108 109 112 111
1 3 109 110 113 112
1 3 110 108 111 113
1 2 114 116 115
1 2 117 118 119
1 3 114 115 118 117
1 3 115 116 119 118
1 3 116 114 117 119
1 2 120 122 121
1 2 123 124 125
1 3 120 121 124 123
1 3 121 122 125 124
1 3 122 120 123 125
1 2 126 128 127
1 2 129 130 131
1 3 126 127 130 129
1 3 127 128 131 130
1 3 128 126 129 131
1 2 132 134 133
1 2 135 136 137
1 3 132 133 136 135
1 3 133 134 137 136
1 3 134 132 135 137
1 2 138 140 139
1 2 141 142 143
1 3 138 139 142 141
1 3 139 140 143 142
1 3 140 138 141 143

vertices
144
3
1 2 5
1 1 5
1 1 6
-7.5495166e-15 2 5
-3.9968029e-15 1 5
-5.7731597e-15 1 6
-5.3290705e-15 1 6
-5.3290705e-15 -2.4424907e-15 5
-3.9968029e-15 1 5
1 1 6
1 -1.5543122e-15 5
1 1 5
-3.9968029e-15 1 5
-5.3290705e-15 -2.4424907e-15 5
-5.3290705e-15 -2.8865799e-15 4
1 1 5
1 -1.5543122e-15 5
1 -1.9984014e-15 4
-5.3290705e-15 -2.4424907e-15 5
-5.3290705e-15 -1 4
-5.3290705e-15 -2.8865799e-15 4
1 -1.5543122e-15 5
1 -1 4
1 -1.9984014e-15 4
1 -1 4
1 -8.8817842e-16 4
1 -1.7763568e-15 3
-5.3290705e-15 -1 4
-5.3290705e-15 -2.8865799e-15 4
-3.9968029e-15 1.6653345e-15 3
-5.3290705e-15 -1.9984014e-15 4
1 1 4
1 -1.7763568e-15 4
-6.6613381e-15 -1.7763568e-15 3
1 1 3
1 -1.7763568e-15 3
1 -1.7763568e-15 3
1 -1.7763568e-15 4
2 -2.220446e-16 4
1 1 3
1 1 4
2 1 4
1 -1.7763568e-15 4
2 1.110223e-16 5
2 -2.220446e-16 4
1 1 4
2 1 5
2 1 4
2 1 5
2 1 4
3 1 4
2 1.110223e-16 5
2 -4.4408921e-16 4
3 5.5511151e-16 4
2 1 4
3 1 3
3 1 4
2 -4.4408921e-16 4
3 7.7715612e-16 3
3 5.5511151e-16 4
3 1.7763568e-15 3
3 1.7208457e-15 4
4 -2.220446e-16 4
3 1 3
3 1 4
4 1 4
4 -2.220446e-16 4
4 1 5
4 1 4
3 1.7208457e-15 4
3 1 5
3 1 4
4 1 4
4 1 5
4 2 5
3 1 4
3 1 5
3 2 5
3 1 5
4 1 6
4 1 5
3 2 5
4 2 6
4 2 5
4 2 5
4 1 5
5 1 5
4 2 6
4 1 6
5 1 6
5 1 6
4 1.110223e-16 6
4 1 6
5 1 5
4 4.4408921e-16 5
4 1 5
4 3.3306691e-16 6
4 4.4408921e-16 5
3 -5.5511151e-16 5
4 1 6
4 1 5
3 1 5
4 1 5
4 -4.4408921e-16 4
4 -3.3306691e-16 5
3 1 5
3 -4.4408921e-16 4
3 -3.3306691e-16 5
3 -2.220446e-16 4
3 -3.3306691e-16 5
3 -1 5
4 -2.220446e-16 4
4 -3.3306691e-16 5
4 -1 5
3 -1 5
4 -1 6
4 -1 5
3 -5.5511151e-16 5
4 -3.3306691e-16 6
4 -5.5511151e-16 5
4 -1 6
4 1.110223e-16 6
5 1.110223e-16 6
4 -1 5
4 -3.3306691e-16 5
5 -3.3306691e-16 5
4 1.110223e-16 6
5 1 6
5 1.110223e-16 6
4 -3.3306691e-16 5
5 1 5
5 -3.3306691e-16 5
5 0 5
5 0 6
6 0 6
5 1 5
5 1 6
6 1 6
5 0 6
6 0 7
6 0 6
5 1 6
6 1 7
6 1 6
FiniteElementSpace
FiniteElementCollection: L2_T1_3D_P0
VDim: 1
Ordering: 0

-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
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valuerange
-1.5 1