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Laplacian

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Absolute running time: 1.39 sec, cpu time: 2.04 sec, memory peak: 39 Mb, absolute service time: 1,41 sec 
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The eigenvectors take 48000 bytes
The Laplacian matrix takes 7980 bytes
  
A =

Compressed Column Sparse (rows = 200, cols = 200, nnz = 598 [1.5%])

  (1, 1) ->  2
  (2, 1) -> -1
  (1, 2) -> -1
  (2, 2) ->  2
  (3, 2) -> -1
  (2, 3) -> -1
  (3, 3) ->  2
  (4, 3) -> -1
  (3, 4) -> -1
  (4, 4) ->  2
  (5, 4) -> -1
  (4, 5) -> -1
  (5, 5) ->  2
  (6, 5) -> -1
  (5, 6) -> -1
  (6, 6) ->  2
  (7, 6) -> -1
  (6, 7) -> -1
  (7, 7) ->  2
  (8, 7) -> -1
  (7, 8) -> -1
  (8, 8) ->  2
  (9, 8) -> -1
  (8, 9) -> -1
  (9, 9) ->  2
  (10, 9) -> -1
  (9, 10) -> -1
  (10, 10) ->  2
  (11, 10) -> -1
  (10, 11) -> -1
  (11, 11) ->  2
  (12, 11) -> -1
  (11, 12) -> -1
  (12, 12) ->  2
  (13, 12) -> -1
  (12, 13) -> -1
  (13, 13) ->  2
  (14, 13) -> -1
  (13, 14) -> -1
  (14, 14) ->  2
  (15, 14) -> -1
  (14, 15) -> -1
  (15, 15) ->  2
  (16, 15) -> -1
  (15, 16) -> -1
  (16, 16) ->  2
  (17, 16) -> -1
  (16, 17) -> -1
  (17, 17) ->  2
  (18, 17) -> -1
  (17, 18) -> -1
  (18, 18) ->  2
  (19, 18) -> -1
  (18, 19) -> -1
  (19, 19) ->  2
  (20, 19) -> -1
  (19, 20) -> -1
  (20, 20) ->  2
  (21, 20) -> -1
  (20, 21) -> -1
  (21, 21) ->  2
  (22, 21) -> -1
  (21, 22) -> -1
  (22, 22) ->  2
  (23, 22) -> -1
  (22, 23) -> -1
  (23, 23) ->  2
  (24, 23) -> -1
  (23, 24) -> -1
  (24, 24) ->  2
  (25, 24) -> -1
  (24, 25) -> -1
  (25, 25) ->  2
  (26, 25) -> -1
  (25, 26) -> -1
  (26, 26) ->  2
  (27, 26) -> -1
  (26, 27) -> -1
  (27, 27) ->  2
  (28, 27) -> -1
  (27, 28) -> -1
  (28, 28) ->  2
  (29, 28) -> -1
  (28, 29) -> -1
  (29, 29) ->  2
  (30, 29) -> -1
  (29, 30) -> -1
  (30, 30) ->  2
  (31, 30) -> -1
  (30, 31) -> -1
  (31, 31) ->  2
  (32, 31) -> -1
  (31, 32) -> -1
  (32, 32) ->  2
  (33, 32) -> -1
  (32, 33) -> -1
  (33, 33) ->  2
  (34, 33) -> -1
  (33, 34) -> -1
  (34, 34) ->  2
  (35, 34) -> -1
  (34, 35) -> -1
  (35, 35) ->  2
  (36, 35) -> -1
  (35, 36) -> -1
  (36, 36) ->  2
  (37, 36) -> -1
  (36, 37) -> -1
  (37, 37) ->  2
  (38, 37) -> -1
  (37, 38) -> -1
  (38, 38) ->  2
  (39, 38) -> -1
  (38, 39) -> -1
  (39, 39) ->  2
  (40, 39) -> -1
  (39, 40) -> -1
  (40, 40) ->  2
  (41, 40) -> -1
  (40, 41) -> -1
  (41, 41) ->  2
  (42, 41) -> -1
  (41, 42) -> -1
  (42, 42) ->  2
  (43, 42) -> -1
  (42, 43) -> -1
  (43, 43) ->  2
  (44, 43) -> -1
  (43, 44) -> -1
  (44, 44) ->  2
  (45, 44) -> -1
  (44, 45) -> -1
  (45, 45) ->  2
  (46, 45) -> -1
  (45, 46) -> -1
  (46, 46) ->  2
  (47, 46) -> -1
  (46, 47) -> -1
  (47, 47) ->  2
  (48, 47) -> -1
  (47, 48) -> -1
  (48, 48) ->  2
  (49, 48) -> -1
  (48, 49) -> -1
  (49, 49) ->  2
  (50, 49) -> -1
  (49, 50) -> -1
  (50, 50) ->  2
  (51, 50) -> -1
  (50, 51) -> -1
  (51, 51) ->  2
  (52, 51) -> -1
  (51, 52) -> -1
  (52, 52) ->  2
  (53, 52) -> -1
  (52, 53) -> -1
  (53, 53) ->  2
  (54, 53) -> -1
  (53, 54) -> -1
  (54, 54) ->  2
  (55, 54) -> -1
  (54, 55) -> -1
  (55, 55) ->  2
  (56, 55) -> -1
  (55, 56) -> -1
  (56, 56) ->  2
  (57, 56) -> -1
  (56, 57) -> -1
  (57, 57) ->  2
  (58, 57) -> -1
  (57, 58) -> -1
  (58, 58) ->  2
  (59, 58) -> -1
  (58, 59) -> -1
  (59, 59) ->  2
  (60, 59) -> -1
  (59, 60) -> -1
  (60, 60) ->  2
  (61, 60) -> -1
  (60, 61) -> -1
  (61, 61) ->  2
  (62, 61) -> -1
  (61, 62) -> -1
  (62, 62) ->  2
  (63, 62) -> -1
  (62, 63) -> -1
  (63, 63) ->  2
  (64, 63) -> -1
  (63, 64) -> -1
  (64, 64) ->  2
  (65, 64) -> -1
  (64, 65) -> -1
  (65, 65) ->  2
  (66, 65) -> -1
  (65, 66) -> -1
  (66, 66) ->  2
  (67, 66) -> -1
  (66, 67) -> -1
  (67, 67) ->  2
  (68, 67) -> -1
  (67, 68) -> -1
  (68, 68) ->  2
  (69, 68) -> -1
  (68, 69) -> -1
  (69, 69) ->  2
  (70, 69) -> -1
  (69, 70) -> -1
  (70, 70) ->  2
  (71, 70) -> -1
  (70, 71) -> -1
  (71, 71) ->  2
  (72, 71) -> -1
  (71, 72) -> -1
  (72, 72) ->  2
  (73, 72) -> -1
  (72, 73) -> -1
  (73, 73) ->  2
  (74, 73) -> -1
  (73, 74) -> -1
  (74, 74) ->  2
  (75, 74) -> -1
  (74, 75) -> -1
  (75, 75) ->  2
  (76, 75) -> -1
  (75, 76) -> -1
  (76, 76) ->  2
  (77, 76) -> -1
  (76, 77) -> -1
  (77, 77) ->  2
  (78, 77) -> -1
  (77, 78) -> -1
  (78, 78) ->  2
  (79, 78) -> -1
  (78, 79) -> -1
  (79, 79) ->  2
  (80, 79) -> -1
  (79, 80) -> -1
  (80, 80) ->  2
  (81, 80) -> -1
  (80, 81) -> -1
  (81, 81) ->  2
  (82, 81) -> -1
  (81, 82) -> -1
  (82, 82) ->  2
  (83, 82) -> -1
  (82, 83) -> -1
  (83, 83) ->  2
  (84, 83) -> -1
  (83, 84) -> -1
  (84, 84) ->  2
  (85, 84) -> -1
  (84, 85) -> -1
  (85, 85) ->  2
  (86, 85) -> -1
  (85, 86) -> -1
  (86, 86) ->  2
  (87, 86) -> -1
  (86, 87) -> -1
  (87, 87) ->  2
  (88, 87) -> -1
  (87, 88) -> -1
  (88, 88) ->  2
  (89, 88) -> -1
  (88, 89) -> -1
  (89, 89) ->  2
  (90, 89) -> -1
  (89, 90) -> -1
  (90, 90) ->  2
  (91, 90) -> -1
  (90, 91) -> -1
  (91, 91) ->  2
  (92, 91) -> -1
  (91, 92) -> -1
  (92, 92) ->  2
  (93, 92) -> -1
  (92, 93) -> -1
  (93, 93) ->  2
  (94, 93) -> -1
  (93, 94) -> -1
  (94, 94) ->  2
  (95, 94) -> -1
  (94, 95) -> -1
  (95, 95) ->  2
  (96, 95) -> -1
  (95, 96) -> -1
  (96, 96) ->  2
  (97, 96) -> -1
  (96, 97) -> -1
  (97, 97) ->  2
  (98, 97) -> -1
  (97, 98) -> -1
  (98, 98) ->  2
  (99, 98) -> -1
  (98, 99) -> -1
  (99, 99) ->  2
  (100, 99) -> -1
  (99, 100) -> -1
  (100, 100) ->  2
  (101, 100) -> -1
  (100, 101) -> -1
  (101, 101) ->  2
  (102, 101) -> -1
  (101, 102) -> -1
  (102, 102) ->  2
  (103, 102) -> -1
  (102, 103) -> -1
  (103, 103) ->  2
  (104, 103) -> -1
  (103, 104) -> -1
  (104, 104) ->  2
  (105, 104) -> -1
  (104, 105) -> -1
  (105, 105) ->  2
  (106, 105) -> -1
  (105, 106) -> -1
  (106, 106) ->  2
  (107, 106) -> -1
  (106, 107) -> -1
  (107, 107) ->  2
  (108, 107) -> -1
  (107, 108) -> -1
  (108, 108) ->  2
  (109, 108) -> -1
  (108, 109) -> -1
  (109, 109) ->  2
  (110, 109) -> -1
  (109, 110) -> -1
  (110, 110) ->  2
  (111, 110) -> -1
  (110, 111) -> -1
  (111, 111) ->  2
  (112, 111) -> -1
  (111, 112) -> -1
  (112, 112) ->  2
  (113, 112) -> -1
  (112, 113) -> -1
  (113, 113) ->  2
  (114, 113) -> -1
  (113, 114) -> -1
  (114, 114) ->  2
  (115, 114) -> -1
  (114, 115) -> -1
  (115, 115) ->  2
  (116, 115) -> -1
  (115, 116) -> -1
  (116, 116) ->  2
  (117, 116) -> -1
  (116, 117) -> -1
  (117, 117) ->  2
  (118, 117) -> -1
  (117, 118) -> -1
  (118, 118) ->  2
  (119, 118) -> -1
  (118, 119) -> -1
  (119, 119) ->  2
  (120, 119) -> -1
  (119, 120) -> -1
  (120, 120) ->  2
  (121, 120) -> -1
  (120, 121) -> -1
  (121, 121) ->  2
  (122, 121) -> -1
  (121, 122) -> -1
  (122, 122) ->  2
  (123, 122) -> -1
  (122, 123) -> -1
  (123, 123) ->  2
  (124, 123) -> -1
  (123, 124) -> -1
  (124, 124) ->  2
  (125, 124) -> -1
  (124, 125) -> -1
  (125, 125) ->  2
  (126, 125) -> -1
  (125, 126) -> -1
  (126, 126) ->  2
  (127, 126) -> -1
  (126, 127) -> -1
  (127, 127) ->  2
  (128, 127) -> -1
  (127, 128) -> -1
  (128, 128) ->  2
  (129, 128) -> -1
  (128, 129) -> -1
  (129, 129) ->  2
  (130, 129) -> -1
  (129, 130) -> -1
  (130, 130) ->  2
  (131, 130) -> -1
  (130, 131) -> -1
  (131, 131) ->  2
  (132, 131) -> -1
  (131, 132) -> -1
  (132, 132) ->  2
  (133, 132) -> -1
  (132, 133) -> -1
  (133, 133) ->  2
  (134, 133) -> -1
  (133, 134) -> -1
  (134, 134) ->  2
  (135, 134) -> -1
  (134, 135) -> -1
  (135, 135) ->  2
  (136, 135) -> -1
  (135, 136) -> -1
  (136, 136) ->  2
  (137, 136) -> -1
  (136, 137) -> -1
  (137, 137) ->  2
  (138, 137) -> -1
  (137, 138) -> -1
  (138, 138) ->  2
  (139, 138) -> -1
  (138, 139) -> -1
  (139, 139) ->  2
  (140, 139) -> -1
  (139, 140) -> -1
  (140, 140) ->  2
  (141, 140) -> -1
  (140, 141) -> -1
  (141, 141) ->  2
  (142, 141) -> -1
  (141, 142) -> -1
  (142, 142) ->  2
  (143, 142) -> -1
  (142, 143) -> -1
  (143, 143) ->  2
  (144, 143) -> -1
  (143, 144) -> -1
  (144, 144) ->  2
  (145, 144) -> -1
  (144, 145) -> -1
  (145, 145) ->  2
  (146, 145) -> -1
  (145, 146) -> -1
  (146, 146) ->  2
  (147, 146) -> -1
  (146, 147) -> -1
  (147, 147) ->  2
  (148, 147) -> -1
  (147, 148) -> -1
  (148, 148) ->  2
  (149, 148) -> -1
  (148, 149) -> -1
  (149, 149) ->  2
  (150, 149) -> -1
  (149, 150) -> -1
  (150, 150) ->  2
  (151, 150) -> -1
  (150, 151) -> -1
  (151, 151) ->  2
  (152, 151) -> -1
  (151, 152) -> -1
  (152, 152) ->  2
  (153, 152) -> -1
  (152, 153) -> -1
  (153, 153) ->  2
  (154, 153) -> -1
  (153, 154) -> -1
  (154, 154) ->  2
  (155, 154) -> -1
  (154, 155) -> -1
  (155, 155) ->  2
  (156, 155) -> -1
  (155, 156) -> -1
  (156, 156) ->  2
  (157, 156) -> -1
  (156, 157) -> -1
  (157, 157) ->  2
  (158, 157) -> -1
  (157, 158) -> -1
  (158, 158) ->  2
  (159, 158) -> -1
  (158, 159) -> -1
  (159, 159) ->  2
  (160, 159) -> -1
  (159, 160) -> -1
  (160, 160) ->  2
  (161, 160) -> -1
  (160, 161) -> -1
  (161, 161) ->  2
  (162, 161) -> -1
  (161, 162) -> -1
  (162, 162) ->  2
  (163, 162) -> -1
  (162, 163) -> -1
  (163, 163) ->  2
  (164, 163) -> -1
  (163, 164) -> -1
  (164, 164) ->  2
  (165, 164) -> -1
  (164, 165) -> -1
  (165, 165) ->  2
  (166, 165) -> -1
  (165, 166) -> -1
  (166, 166) ->  2
  (167, 166) -> -1
  (166, 167) -> -1
  (167, 167) ->  2
  (168, 167) -> -1
  (167, 168) -> -1
  (168, 168) ->  2
  (169, 168) -> -1
  (168, 169) -> -1
  (169, 169) ->  2
  (170, 169) -> -1
  (169, 170) -> -1
  (170, 170) ->  2
  (171, 170) -> -1
  (170, 171) -> -1
  (171, 171) ->  2
  (172, 171) -> -1
  (171, 172) -> -1
  (172, 172) ->  2
  (173, 172) -> -1
  (172, 173) -> -1
  (173, 173) ->  2
  (174, 173) -> -1
  (173, 174) -> -1
  (174, 174) ->  2
  (175, 174) -> -1
  (174, 175) -> -1
  (175, 175) ->  2
  (176, 175) -> -1
  (175, 176) -> -1
  (176, 176) ->  2
  (177, 176) -> -1
  (176, 177) -> -1
  (177, 177) ->  2
  (178, 177) -> -1
  (177, 178) -> -1
  (178, 178) ->  2
  (179, 178) -> -1
  (178, 179) -> -1
  (179, 179) ->  2
  (180, 179) -> -1
  (179, 180) -> -1
  (180, 180) ->  2
  (181, 180) -> -1
  (180, 181) -> -1
  (181, 181) ->  2
  (182, 181) -> -1
  (181, 182) -> -1
  (182, 182) ->  2
  (183, 182) -> -1
  (182, 183) -> -1
  (183, 183) ->  2
  (184, 183) -> -1
  (183, 184) -> -1
  (184, 184) ->  2
  (185, 184) -> -1
  (184, 185) -> -1
  (185, 185) ->  2
  (186, 185) -> -1
  (185, 186) -> -1
  (186, 186) ->  2
  (187, 186) -> -1
  (186, 187) -> -1
  (187, 187) ->  2
  (188, 187) -> -1
  (187, 188) -> -1
  (188, 188) ->  2
  (189, 188) -> -1
  (188, 189) -> -1
  (189, 189) ->  2
  (190, 189) -> -1
  (189, 190) -> -1
  (190, 190) ->  2
  (191, 190) -> -1
  (190, 191) -> -1
  (191, 191) ->  2
  (192, 191) -> -1
  (191, 192) -> -1
  (192, 192) ->  2
  (193, 192) -> -1
  (192, 193) -> -1
  (193, 193) ->  2
  (194, 193) -> -1
  (193, 194) -> -1
  (194, 194) ->  2
  (195, 194) -> -1
  (194, 195) -> -1
  (195, 195) ->  2
  (196, 195) -> -1
  (195, 196) -> -1
  (196, 196) ->  2
  (197, 196) -> -1
  (196, 197) -> -1
  (197, 197) ->  2
  (198, 197) -> -1
  (197, 198) -> -1
  (198, 198) ->  2
  (199, 198) -> -1
  (198, 199) -> -1
  (199, 199) ->  2
  (200, 199) -> -1
  (199, 200) -> -1
  (200, 200) ->  1



   0 CCC--------------+-----------------+----------------+----------------++
     + CCCCC          +                 +                +                 +
     |    CCCCC                                                            |
     |        CCCCC                                                        |
     |            CCCCC                                                    |
  50 ++              CCCCCC                                               ++
     |                   CCCCC                                             |
     |                       CCCCC                                         |
     |                           CCCC                                      |
 100 ++                             CCCCC                                 ++
     |                                  CCCCC                              |
     |                                      CCCC                           |
     |                                         CCCCC                       |
     |                                             CCCCC                   |
 150 ++                                               CCCCCC              ++
     |                                                    CCCCC            |
     |                                                        CCCCC        |
     |                                                            CCCCC    |
     +                +                 +                +           CCCCC +
 200 ++---------------+-----------------+----------------+---------------CCC
     0               50                100              150               200


    
                
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