Graph forms
for C4 [ 280, 9 ] = PS(56,5;2)
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On this page are computer-accessible forms for the graph C4[ 280, 9 ] =
PS(56,5;2).
(I) Following is a form readable by MAGMA:
g:=Graph<280|{ {9, 11}, {269, 271}, {260, 262}, {249, 251}, {240, 242}, {229,
231}, {129, 131}, {120, 122}, {109, 111}, {100, 102}, {89, 91}, {20, 22}, {29,
31}, {40, 42}, {49, 51}, {60, 62}, {69, 71}, {80, 82}, {140, 142}, {149, 151},
{160, 162}, {169, 171}, {180, 182}, {189, 191}, {200, 202}, {209, 211}, {220,
222}, {5, 6}, {268, 271}, {265, 266}, {260, 263}, {248, 251}, {245, 246}, {240,
243}, {228, 231}, {128, 131}, {125, 126}, {120, 123}, {108, 111}, {105, 106},
{100, 103}, {88, 91}, {85, 86}, {8, 11}, {20, 23}, {25, 26}, {28, 31}, {40, 43},
{45, 46}, {48, 51}, {60, 63}, {65, 66}, {68, 71}, {80, 83}, {140, 143}, {145,
146}, {148, 151}, {160, 163}, {165, 166}, {168, 171}, {180, 183}, {185, 186},
{188, 191}, {200, 203}, {205, 206}, {208, 211}, {220, 223}, {225, 226}, {2, 6},
{275, 279}, {274, 278}, {273, 277}, {272, 276}, {265, 269}, {264, 268}, {243,
247}, {242, 246}, {235, 239}, {234, 238}, {233, 237}, {232, 236}, {123, 127},
{122, 126}, {115, 119}, {114, 118}, {113, 117}, {112, 116}, {105, 109}, {104,
108}, {3, 7}, {24, 28}, {25, 29}, {32, 36}, {33, 37}, {34, 38}, {35, 39}, {42,
46}, {43, 47}, {64, 68}, {65, 69}, {72, 76}, {73, 77}, {74, 78}, {75, 79}, {82,
86}, {83, 87}, {144, 148}, {145, 149}, {152, 156}, {153, 157}, {154, 158}, {155,
159}, {162, 166}, {163, 167}, {184, 188}, {185, 189}, {192, 196}, {193, 197},
{194, 198}, {195, 199}, {202, 206}, {203, 207}, {224, 228}, {225, 229}, {9, 12},
{259, 262}, {249, 252}, {129, 132}, {99, 102}, {89, 92}, {19, 22}, {49, 52},
{59, 62}, {139, 142}, {169, 172}, {179, 182}, {209, 212}, {219, 222}, {1, 7},
{273, 279}, {272, 278}, {264, 270}, {259, 261}, {250, 252}, {241, 247}, {233,
239}, {232, 238}, {130, 132}, {121, 127}, {113, 119}, {112, 118}, {104, 110},
{99, 101}, {90, 92}, {10, 12}, {19, 21}, {24, 30}, {32, 38}, {33, 39}, {41, 47},
{50, 52}, {59, 61}, {64, 70}, {72, 78}, {73, 79}, {81, 87}, {139, 141}, {144,
150}, {152, 158}, {153, 159}, {161, 167}, {170, 172}, {179, 181}, {184, 190},
{192, 198}, {193, 199}, {201, 207}, {210, 212}, {219, 221}, {224, 230}, {8, 15},
{275, 276}, {258, 261}, {256, 263}, {250, 253}, {248, 255}, {235, 236}, {136,
143}, {130, 133}, {128, 135}, {115, 116}, {98, 101}, {96, 103}, {90, 93}, {88,
95}, {10, 13}, {16, 23}, {18, 21}, {35, 36}, {48, 55}, {50, 53}, {56, 63}, {58,
61}, {75, 76}, {138, 141}, {155, 156}, {168, 175}, {170, 173}, {176, 183}, {178,
181}, {195, 196}, {208, 215}, {210, 213}, {216, 223}, {218, 221}, {6, 14}, {257,
265}, {256, 264}, {247, 255}, {246, 254}, {227, 235}, {117, 125}, {116, 124},
{97, 105}, {96, 104}, {87, 95}, {86, 94}, {7, 15}, {16, 24}, {17, 25}, {36, 44},
{37, 45}, {66, 74}, {67, 75}, {146, 154}, {147, 155}, {166, 174}, {167, 175},
{176, 184}, {177, 185}, {196, 204}, {197, 205}, {226, 234}, {7, 14}, {257, 264},
{247, 254}, {227, 234}, {117, 124}, {97, 104}, {87, 94}, {17, 24}, {37, 44},
{67, 74}, {147, 154}, {167, 174}, {177, 184}, {197, 204}, {2, 8}, {274, 280},
{263, 269}, {262, 268}, {243, 249}, {242, 248}, {231, 237}, {134, 140}, {131,
137}, {114, 120}, {103, 109}, {102, 108}, {83, 89}, {3, 9}, {22, 28}, {23, 29},
{34, 40}, {51, 57}, {54, 60}, {71, 77}, {82, 88}, {151, 157}, {162, 168}, {163,
169}, {182, 188}, {183, 189}, {194, 200}, {211, 217}, {214, 220}, {1, 10}, {261,
270}, {258, 265}, {246, 253}, {241, 250}, {118, 125}, {101, 110}, {98, 105},
{86, 93}, {6, 13}, {18, 25}, {21, 30}, {38, 45}, {66, 73}, {81, 90}, {146, 153},
{161, 170}, {166, 173}, {178, 185}, {181, 190}, {198, 205}, {226, 233}, {4, 8},
{263, 267}, {262, 266}, {245, 249}, {244, 248}, {135, 139}, {134, 138}, {133,
137}, {132, 136}, {103, 107}, {102, 106}, {85, 89}, {84, 88}, {5, 9}, {22, 26},
{23, 27}, {52, 56}, {53, 57}, {54, 58}, {55, 59}, {164, 168}, {165, 169}, {182,
186}, {183, 187}, {212, 216}, {213, 217}, {214, 218}, {215, 219}, {39, 42},
{229, 232}, {119, 122}, {69, 72}, {149, 152}, {199, 202}, {4, 10}, {261, 267},
{244, 250}, {230, 232}, {133, 139}, {132, 138}, {119, 121}, {101, 107}, {84,
90}, {21, 27}, {39, 41}, {52, 58}, {53, 59}, {70, 72}, {150, 152}, {164, 170},
{181, 187}, {199, 201}, {212, 218}, {213, 219}, {36, 43}, {230, 233}, {228,
235}, {135, 136}, {131, 140}, {118, 121}, {116, 123}, {38, 41}, {51, 60}, {55,
56}, {68, 75}, {70, 73}, {148, 155}, {150, 153}, {196, 203}, {198, 201}, {211,
220}, {215, 216}, {71, 80}, {271, 280}, {231, 240}, {111, 120}, {46, 54}, {267,
275}, {266, 274}, {237, 245}, {236, 244}, {136, 144}, {107, 115}, {106, 114},
{47, 55}, {76, 84}, {77, 85}, {137, 145}, {206, 214}, {207, 215}, {47, 54},
{267, 274}, {237, 244}, {107, 114}, {77, 84}, {137, 144}, {207, 214}, {11, 17},
{271, 277}, {234, 240}, {111, 117}, {14, 20}, {42, 48}, {43, 49}, {74, 80},
{142, 148}, {143, 149}, {171, 177}, {174, 180}, {202, 208}, {203, 209}, {41,
50}, {266, 273}, {238, 245}, {106, 113}, {46, 53}, {78, 85}, {138, 145}, {141,
150}, {201, 210}, {206, 213}, {12, 16}, {13, 17}, {14, 18}, {15, 19}, {44, 48},
{45, 49}, {142, 146}, {143, 147}, {172, 176}, {173, 177}, {174, 178}, {175,
179}, {204, 208}, {205, 209}, {79, 82}, {269, 272}, {239, 242}, {109, 112}, {12,
18}, {270, 272}, {239, 241}, {110, 112}, {13, 19}, {44, 50}, {79, 81}, {141,
147}, {172, 178}, {173, 179}, {204, 210}, {11, 20}, {270, 273}, {268, 275},
{238, 241}, {236, 243}, {110, 113}, {108, 115}, {15, 16}, {76, 83}, {78, 81},
{171, 180}, {175, 176}, {31, 40}, {151, 160}, {26, 34}, {27, 35}, {156, 164},
{157, 165}, {216, 224}, {217, 225}, {27, 34}, {157, 164}, {217, 224}, {31, 37},
{94, 100}, {91, 97}, {154, 160}, {222, 228}, {223, 229}, {26, 33}, {158, 165},
{218, 225}, {221, 230}, {92, 96}, {95, 99}, {94, 98}, {93, 97}, {222, 226},
{223, 227}, {29, 32}, {159, 162}, {30, 32}, {93, 99}, {92, 98}, {159, 161},
{221, 227}, {28, 35}, {95, 96}, {91, 100}, {30, 33}, {156, 163}, {158, 161},
{191, 200}, {56, 64}, {57, 65}, {186, 194}, {187, 195}, {57, 64}, {187, 194},
{62, 68}, {63, 69}, {191, 197}, {58, 65}, {61, 70}, {186, 193}, {62, 66}, {63,
67}, {189, 192}, {61, 67}, {190, 192}, {188, 195}, {190, 193}, {126, 134}, {127,
135}, {127, 134}, {122, 128}, {123, 129}, {121, 130}, {126, 133}, {124, 128},
{125, 129}, {124, 130}, {4, 276}, {5, 277}, {4, 277}, {5, 278}, {2, 279}, {1,
279}, {1, 278}, {3, 276}, {2, 280}, {3, 280}, {251, 257}, {254, 260}, {252,
256}, {255, 259}, {254, 258}, {253, 257}, {252, 258}, {253, 259}, {251, 260},
{255, 256} }>;
(II) A more general form is to represent the graph as the orbit of {9, 11}
under the group generated by the following permutations:
a: (1, 6, 11, 16, 21, 26, 31, 36, 41, 46, 51, 56, 61, 66, 71, 76, 81, 86, 91,
96, 101, 106, 111, 116, 121, 126, 131, 136, 141, 146, 151, 156, 161, 166, 171,
176, 181, 186, 191, 196, 201, 206, 211, 216, 221, 226, 231, 236, 241, 246, 251,
256, 261, 266, 271, 276)(2, 8, 15, 19, 22, 28, 35, 39, 42, 48, 55, 59, 62, 68,
75, 79, 82, 88, 95, 99, 102, 108, 115, 119, 122, 128, 135, 139, 142, 148, 155,
159, 162, 168, 175, 179, 182, 188, 195, 199, 202, 208, 215, 219, 222, 228, 235,
239, 242, 248, 255, 259, 262, 268, 275, 279)(3, 10, 14, 17, 23, 30, 34, 37, 43,
50, 54, 57, 63, 70, 74, 77, 83, 90, 94, 97, 103, 110, 114, 117, 123, 130, 134,
137, 143, 150, 154, 157, 163, 170, 174, 177, 183, 190, 194, 197, 203, 210, 214,
217, 223, 230, 234, 237, 243, 250, 254, 257, 263, 270, 274, 277)(4, 7, 13, 20,
24, 27, 33, 40, 44, 47, 53, 60, 64, 67, 73, 80, 84, 87, 93, 100, 104, 107, 113,
120, 124, 127, 133, 140, 144, 147, 153, 160, 164, 167, 173, 180, 184, 187, 193,
200, 204, 207, 213, 220, 224, 227, 233, 240, 244, 247, 253, 260, 264, 267, 273,
280)(5, 9, 12, 18, 25, 29, 32, 38, 45, 49, 52, 58, 65, 69, 72, 78, 85, 89, 92,
98, 105, 109, 112, 118, 125, 129, 132, 138, 145, 149, 152, 158, 165, 169, 172,
178, 185, 189, 192, 198, 205, 209, 212, 218, 225, 229, 232, 238, 245, 249, 252,
258, 265, 269, 272, 278) (III) Last is Groups&Graphs. Copy everything between (not including)
the lines of asterisks into a plain text file and save it as "graph.txt". Then
launch G&G (Groups&Graphs) and select Read Text from the File menu.
**************
&Graph **************
b: (1, 2)(3, 5)(6, 7)(8, 10)(11, 12)(13, 15)(16, 17)(18, 20)(21, 22)(23, 25)(26,
27)(28, 30)(31, 32)(33, 35)(36, 37)(38, 40)(41, 42)(43, 45)(46, 47)(48, 50)(51,
52)(53, 55)(56, 57)(58, 60)(61, 62)(63, 65)(66, 67)(68, 70)(71, 72)(73, 75)(76,
77)(78, 80)(81, 82)(83, 85)(86, 87)(88, 90)(91, 92)(93, 95)(96, 97)(98,
100)(101, 102)(103, 105)(106, 107)(108, 110)(111, 112)(113, 115)(116, 117)(118,
120)(121, 122)(123, 125)(126, 127)(128, 130)(131, 132)(133, 135)(136, 137)(138,
140)(141, 142)(143, 145)(146, 147)(148, 150)(151, 152)(153, 155)(156, 157)(158,
160)(161, 162)(163, 165)(166, 167)(168, 170)(171, 172)(173, 175)(176, 177)(178,
180)(181, 182)(183, 185)(186, 187)(188, 190)(191, 192)(193, 195)(196, 197)(198,
200)(201, 202)(203, 205)(206, 207)(208, 210)(211, 212)(213, 215)(216, 217)(218,
220)(221, 222)(223, 225)(226, 227)(228, 230)(231, 232)(233, 235)(236, 237)(238,
240)(241, 242)(243, 245)(246, 247)(248, 250)(251, 252)(253, 255)(256, 257)(258,
260)(261, 262)(263, 265)(266, 267)(268, 270)(271, 272)(273, 275)(276, 277)(278,
280)
c: (2, 5)(3, 4)(7, 10)(8, 9)(12, 15)(13, 14)(17, 20)(18, 19)(22, 25)(23, 24)(27,
30)(28, 29)(32, 35)(33, 34)(37, 40)(38, 39)(42, 45)(43, 44)(47, 50)(48, 49)(52,
55)(53, 54)(57, 60)(58, 59)(62, 65)(63, 64)(67, 70)(68, 69)(72, 75)(73, 74)(77,
80)(78, 79)(82, 85)(83, 84)(87, 90)(88, 89)(92, 95)(93, 94)(97, 100)(98,
99)(102, 105)(103, 104)(107, 110)(108, 109)(112, 115)(113, 114)(117, 120)(118,
119)(122, 125)(123, 124)(127, 130)(128, 129)(132, 135)(133, 134)(137, 140)(138,
139)(142, 145)(143, 144)(147, 150)(148, 149)(152, 155)(153, 154)(157, 160)(158,
159)(162, 165)(163, 164)(167, 170)(168, 169)(172, 175)(173, 174)(177, 180)(178,
179)(182, 185)(183, 184)(187, 190)(188, 189)(192, 195)(193, 194)(197, 200)(198,
199)(202, 205)(203, 204)(207, 210)(208, 209)(212, 215)(213, 214)(217, 220)(218,
219)(222, 225)(223, 224)(227, 230)(228, 229)(232, 235)(233, 234)(237, 240)(238,
239)(242, 245)(243, 244)(247, 250)(248, 249)(252, 255)(253, 254)(257, 260)(258,
259)(262, 265)(263, 264)(267, 270)(268, 269)(272, 275)(273, 274)(277, 280)(278,
279)
d: (2, 3, 5, 4)(6, 276)(7, 278, 10, 279)(8, 280, 9, 277)(11, 271)(12, 273, 15,
274)(13, 275, 14, 272)(16, 266)(17, 268, 20, 269)(18, 270, 19, 267)(21, 261)(22,
263, 25, 264)(23, 265, 24, 262)(26, 256)(27, 258, 30, 259)(28, 260, 29, 257)(31,
251)(32, 253, 35, 254)(33, 255, 34, 252)(36, 246)(37, 248, 40, 249)(38, 250, 39,
247)(41, 241)(42, 243, 45, 244)(43, 245, 44, 242)(46, 236)(47, 238, 50, 239)(48,
240, 49, 237)(51, 231)(52, 233, 55, 234)(53, 235, 54, 232)(56, 226)(57, 228, 60,
229)(58, 230, 59, 227)(61, 221)(62, 223, 65, 224)(63, 225, 64, 222)(66, 216)(67,
218, 70, 219)(68, 220, 69, 217)(71, 211)(72, 213, 75, 214)(73, 215, 74, 212)(76,
206)(77, 208, 80, 209)(78, 210, 79, 207)(81, 201)(82, 203, 85, 204)(83, 205, 84,
202)(86, 196)(87, 198, 90, 199)(88, 200, 89, 197)(91, 191)(92, 193, 95, 194)(93,
195, 94, 192)(96, 186)(97, 188, 100, 189)(98, 190, 99, 187)(101, 181)(102, 183,
105, 184)(103, 185, 104, 182)(106, 176)(107, 178, 110, 179)(108, 180, 109,
177)(111, 171)(112, 173, 115, 174)(113, 175, 114, 172)(116, 166)(117, 168, 120,
169)(118, 170, 119, 167)(121, 161)(122, 163, 125, 164)(123, 165, 124, 162)(126,
156)(127, 158, 130, 159)(128, 160, 129, 157)(131, 151)(132, 153, 135, 154)(133,
155, 134, 152)(136, 146)(137, 148, 140, 149)(138, 150, 139, 147)(142, 143, 145,
144)
C4[ 280, 9 ]
280
-1 278 279 7 10
-2 279 280 6 8
-3 276 280 7 9
-4 276 277 8 10
-5 277 278 6 9
-6 2 13 14 5
-7 1 3 14 15
-8 11 2 4 15
-9 11 12 3 5
-10 1 12 13 4
-11 17 8 9 20
-12 16 18 9 10
-13 6 17 19 10
-14 6 7 18 20
-15 16 7 8 19
-16 12 23 24 15
-17 11 13 24 25
-18 12 14 25 21
-19 22 13 15 21
-20 11 22 23 14
-21 27 18 19 30
-22 26 28 19 20
-23 16 27 29 20
-24 16 17 28 30
-25 26 17 18 29
-26 22 33 34 25
-27 23 34 35 21
-28 22 24 35 31
-29 23 25 31 32
-30 33 24 21 32
-31 37 28 29 40
-32 36 38 29 30
-33 26 37 39 30
-34 26 27 38 40
-35 36 27 28 39
-36 44 35 32 43
-37 33 44 45 31
-38 34 45 41 32
-39 33 35 41 42
-40 34 31 42 43
-41 47 38 39 50
-42 46 48 39 40
-43 36 47 49 40
-44 36 37 48 50
-45 46 37 38 49
-46 45 42 53 54
-47 55 41 43 54
-48 44 55 51 42
-49 45 51 52 43
-50 44 41 52 53
-51 57 48 49 60
-52 56 58 49 50
-53 46 57 59 50
-54 46 47 58 60
-55 56 47 48 59
-56 55 52 63 64
-57 51 53 64 65
-58 61 52 54 65
-59 55 61 62 53
-60 51 62 63 54
-61 67 58 59 70
-62 66 68 59 60
-63 56 67 69 60
-64 56 57 68 70
-65 66 57 58 69
-66 62 73 74 65
-67 61 63 74 75
-68 71 62 64 75
-69 71 72 63 65
-70 61 72 73 64
-71 77 68 69 80
-72 78 69 70 76
-73 66 77 79 70
-74 66 67 78 80
-75 67 68 79 76
-76 72 83 84 75
-77 71 73 84 85
-78 81 72 74 85
-79 81 82 73 75
-80 71 82 83 74
-81 78 79 90 87
-82 88 79 80 86
-83 89 80 76 87
-84 77 88 90 76
-85 77 78 89 86
-86 82 93 94 85
-87 81 83 94 95
-88 91 82 84 95
-89 91 92 83 85
-90 81 92 93 84
-91 88 89 100 97
-92 89 90 96 98
-93 99 90 86 97
-94 100 86 87 98
-95 88 99 96 87
-96 92 103 104 95
-97 91 93 104 105
-98 101 92 94 105
-99 101 102 93 95
-100 91 102 103 94
-101 99 110 107 98
-102 99 100 106 108
-103 100 96 107 109
-104 110 96 97 108
-105 106 97 98 109
-106 102 113 114 105
-107 101 103 114 115
-108 111 102 104 115
-109 111 112 103 105
-110 101 112 113 104
-111 117 108 109 120
-112 110 116 118 109
-113 110 106 117 119
-114 106 107 118 120
-115 116 107 108 119
-116 112 123 124 115
-117 111 113 124 125
-118 121 112 114 125
-119 121 122 113 115
-120 111 122 123 114
-121 127 118 119 130
-122 126 128 119 120
-123 116 127 129 120
-124 116 117 128 130
-125 126 117 118 129
-126 122 133 134 125
-127 121 123 134 135
-128 122 124 135 131
-129 132 123 125 131
-130 121 132 133 124
-131 137 128 129 140
-132 136 138 129 130
-133 126 137 139 130
-134 126 127 138 140
-135 136 127 128 139
-136 132 143 144 135
-137 133 144 145 131
-138 132 134 145 141
-139 133 135 141 142
-140 143 134 131 142
-141 147 138 139 150
-142 146 148 139 140
-143 136 147 149 140
-144 136 137 148 150
-145 146 137 138 149
-146 154 145 142 153
-147 143 154 155 141
-148 144 155 151 142
-149 143 145 151 152
-150 144 141 152 153
-151 157 148 149 160
-152 156 158 149 150
-153 146 157 159 150
-154 146 147 158 160
-155 156 147 148 159
-156 155 152 163 164
-157 165 151 153 164
-158 154 165 161 152
-159 155 161 162 153
-160 154 151 162 163
-161 167 158 159 170
-162 166 168 159 160
-163 156 167 169 160
-164 156 157 168 170
-165 166 157 158 169
-166 165 162 173 174
-167 161 163 174 175
-168 171 162 164 175
-169 165 171 172 163
-170 161 172 173 164
-171 177 168 169 180
-172 176 178 169 170
-173 166 177 179 170
-174 166 167 178 180
-175 176 167 168 179
-176 172 183 184 175
-177 171 173 184 185
-178 181 172 174 185
-179 181 182 173 175
-180 171 182 183 174
-181 187 178 179 190
-182 188 179 180 186
-183 176 187 189 180
-184 176 177 188 190
-185 177 178 189 186
-186 182 193 194 185
-187 181 183 194 195
-188 191 182 184 195
-189 191 192 183 185
-190 181 192 193 184
-191 188 189 200 197
-192 198 189 190 196
-193 199 190 186 197
-194 187 198 200 186
-195 187 188 199 196
-196 192 203 204 195
-197 191 193 204 205
-198 201 192 194 205
-199 201 202 193 195
-200 191 202 203 194
-201 198 199 210 207
-202 199 200 206 208
-203 209 200 196 207
-204 210 196 197 208
-205 198 209 206 197
-206 202 213 214 205
-207 201 203 214 215
-208 211 202 204 215
-209 211 212 203 205
-210 201 212 213 204
-211 209 220 217 208
-212 209 210 216 218
-213 210 206 217 219
-214 220 206 207 218
-215 216 207 208 219
-216 212 223 224 215
-217 211 213 224 225
-218 221 212 214 225
-219 221 222 213 215
-220 211 222 223 214
-221 227 218 219 230
-222 220 226 228 219
-223 220 216 227 229
-224 216 217 228 230
-225 226 217 218 229
-226 222 233 234 225
-227 221 223 234 235
-228 231 222 224 235
-229 231 232 223 225
-230 221 232 233 224
-231 237 228 229 240
-232 236 238 229 230
-233 226 237 239 230
-234 226 227 238 240
-235 236 227 228 239
-236 232 243 244 235
-237 231 233 244 245
-238 232 234 245 241
-239 242 233 235 241
-240 231 242 243 234
-241 247 238 239 250
-242 246 248 239 240
-243 236 247 249 240
-244 236 237 248 250
-245 246 237 238 249
-246 242 253 254 245
-247 243 254 255 241
-248 242 244 255 251
-249 243 245 251 252
-250 253 244 241 252
-251 257 248 249 260
-252 256 258 249 250
-253 246 257 259 250
-254 246 247 258 260
-255 256 247 248 259
-256 264 255 252 263
-257 253 264 265 251
-258 254 265 261 252
-259 253 255 261 262
-260 254 251 262 263
-261 267 258 259 270
-262 266 268 259 260
-263 256 267 269 260
-264 256 257 268 270
-265 266 257 258 269
-266 265 262 273 274
-267 275 261 263 274
-268 264 275 271 262
-269 265 271 272 263
-270 264 261 272 273
-271 277 268 269 280
-272 276 278 269 270
-273 266 277 279 270
-274 266 267 278 280
-275 276 267 268 279
-276 275 3 4 272
-277 4 5 271 273
-278 1 5 272 274
-279 275 1 2 273
-280 2 3 271 274
0