diff --git a/day5/day5.py b/day5/day5.py
new file mode 100644
index 0000000..3128904
--- /dev/null
+++ b/day5/day5.py
@@ -0,0 +1,41 @@
+from collections import defaultdict
+
+def main(infile):
+    points = defaultdict(int)
+    with open(infile) as f:
+        for line in f:
+            start, end = line.split(" -> ")
+            start_x, start_y = [int(x) for x in start.split(",")]
+            end_x, end_y = [int(x) for x in end.split(",")]
+
+            # column |
+            if start_x == end_x:
+                step = 1 if start_y < end_y else -1
+                for y in range(start_y, end_y + step, step):
+                    points[(start_x, y)] = points[(start_x, y)] + 1
+            # line -
+            elif start_y == end_y:
+                step = 1 if start_x < end_x else -1
+                for x in range(start_x, end_x + step, step):
+                    points[(x, start_y)] = points[(x, start_y)] + 1
+            # diagonal \
+            elif ((start_x < end_x and start_y > end_y) 
+                    or (start_x > end_x and start_y < end_y)):
+                step = 1 if start_y > end_y else -1
+                for dx in range(0, end_x - start_x + step, step):
+                    points[(start_x + dx, start_y - dx)] = points[(start_x + dx, start_y + dx)] + 1
+            # diagonal /
+            elif ((start_x < end_x and start_y < end_y)
+                    or (start_x > end_x and start_y > end_y)):
+                step = 1 if start_y < end_y else -1
+                for dx in range(0, end_x - start_x + step, step):
+                    points[(start_x + dx, start_y + dx)] = points[(start_x + dx, start_y + dx)] + 1
+                    
+    res = len([x for x in points.values() if x >= 2])
+    print(res)
+
+
+
+
+if __name__ == "__main__":
+    main("input.txt")
diff --git a/day5/input.txt b/day5/input.txt
new file mode 100644
index 0000000..1239ab3
--- /dev/null
+++ b/day5/input.txt
@@ -0,0 +1,500 @@
+299,462 -> 299,747
+855,314 -> 855,140
+981,328 -> 798,328
+610,444 -> 680,374
+797,242 -> 606,242
+217,42 -> 147,42
+735,378 -> 735,188
+247,192 -> 912,192
+377,341 -> 768,341
+472,701 -> 66,701
+48,970 -> 885,133
+893,35 -> 664,35
+617,237 -> 951,237
+540,643 -> 190,293
+575,815 -> 302,815
+146,380 -> 146,562
+568,481 -> 568,161
+38,101 -> 921,984
+613,12 -> 185,12
+967,30 -> 17,980
+823,620 -> 584,859
+672,822 -> 413,822
+259,626 -> 385,752
+752,415 -> 857,310
+758,659 -> 758,76
+909,893 -> 35,19
+964,913 -> 105,54
+697,196 -> 697,913
+389,821 -> 163,821
+783,65 -> 281,65
+775,732 -> 558,732
+818,817 -> 42,817
+499,537 -> 896,140
+81,957 -> 81,844
+851,256 -> 559,548
+268,970 -> 268,170
+106,216 -> 68,178
+107,371 -> 850,371
+160,107 -> 748,107
+300,619 -> 524,395
+940,196 -> 780,356
+752,498 -> 752,94
+807,619 -> 728,619
+831,89 -> 313,89
+56,389 -> 191,524
+206,75 -> 206,816
+486,924 -> 486,389
+280,708 -> 542,446
+562,917 -> 190,545
+40,231 -> 40,404
+804,327 -> 726,249
+538,670 -> 170,302
+473,229 -> 912,668
+645,195 -> 645,916
+502,13 -> 502,266
+639,955 -> 639,434
+87,56 -> 943,912
+143,798 -> 699,798
+469,261 -> 79,651
+715,98 -> 104,709
+914,339 -> 463,790
+456,263 -> 456,101
+656,105 -> 109,105
+28,944 -> 123,944
+981,652 -> 270,652
+953,681 -> 605,333
+474,858 -> 310,858
+542,736 -> 807,736
+234,412 -> 620,26
+615,786 -> 36,207
+169,56 -> 169,132
+133,930 -> 989,74
+342,34 -> 516,34
+210,97 -> 947,834
+43,857 -> 824,76
+673,840 -> 673,156
+718,123 -> 896,123
+673,311 -> 673,564
+639,352 -> 72,919
+552,571 -> 661,462
+819,335 -> 953,335
+756,84 -> 823,84
+250,969 -> 287,969
+551,260 -> 378,433
+417,412 -> 465,412
+621,260 -> 249,632
+226,633 -> 394,465
+475,179 -> 602,306
+272,571 -> 272,839
+820,666 -> 820,829
+988,608 -> 974,608
+124,318 -> 124,589
+303,516 -> 839,516
+983,477 -> 983,786
+299,870 -> 927,242
+284,875 -> 213,875
+427,493 -> 545,493
+74,755 -> 17,698
+294,326 -> 294,23
+331,193 -> 391,193
+381,671 -> 408,644
+805,537 -> 805,155
+721,956 -> 10,956
+918,36 -> 918,915
+981,891 -> 445,355
+591,288 -> 933,288
+199,256 -> 250,307
+318,810 -> 789,339
+250,245 -> 522,517
+592,248 -> 958,614
+722,215 -> 235,215
+654,496 -> 654,905
+76,860 -> 678,258
+29,20 -> 954,945
+379,851 -> 567,851
+722,161 -> 13,870
+965,302 -> 390,877
+114,892 -> 114,348
+265,681 -> 26,920
+94,463 -> 94,160
+340,150 -> 340,759
+727,612 -> 175,60
+457,951 -> 154,648
+602,200 -> 602,841
+487,194 -> 27,654
+356,699 -> 887,168
+915,237 -> 262,890
+81,225 -> 815,959
+227,877 -> 694,877
+441,674 -> 441,968
+865,201 -> 865,528
+969,214 -> 511,214
+802,748 -> 802,86
+662,313 -> 636,313
+308,447 -> 308,545
+245,236 -> 532,236
+621,195 -> 621,140
+889,159 -> 197,851
+68,683 -> 179,572
+859,261 -> 56,261
+982,539 -> 982,619
+144,362 -> 851,362
+304,905 -> 304,553
+551,905 -> 637,905
+432,316 -> 142,606
+104,588 -> 104,862
+316,392 -> 680,392
+372,413 -> 866,413
+874,53 -> 697,53
+499,668 -> 499,329
+32,207 -> 802,977
+403,108 -> 100,411
+578,442 -> 578,489
+134,161 -> 848,875
+851,935 -> 95,179
+485,190 -> 485,57
+411,47 -> 680,47
+378,878 -> 378,127
+908,717 -> 516,717
+432,863 -> 328,863
+212,278 -> 212,326
+552,426 -> 933,807
+419,329 -> 492,402
+975,750 -> 424,750
+40,54 -> 915,929
+570,349 -> 576,349
+32,784 -> 32,473
+854,407 -> 343,407
+18,932 -> 425,932
+223,571 -> 468,816
+939,330 -> 939,870
+126,637 -> 105,616
+84,310 -> 84,788
+491,890 -> 229,890
+737,831 -> 737,726
+137,471 -> 137,957
+642,429 -> 253,429
+319,103 -> 903,103
+38,872 -> 38,110
+809,183 -> 809,653
+877,87 -> 56,908
+455,136 -> 693,374
+218,647 -> 727,647
+626,544 -> 797,544
+147,46 -> 122,46
+316,430 -> 495,430
+608,469 -> 331,192
+353,769 -> 714,769
+649,90 -> 410,90
+105,311 -> 105,674
+594,600 -> 484,600
+822,933 -> 279,933
+478,267 -> 478,341
+114,912 -> 114,387
+843,480 -> 754,480
+747,701 -> 747,143
+646,88 -> 646,375
+195,129 -> 757,691
+470,895 -> 470,673
+450,595 -> 334,711
+165,872 -> 165,155
+744,947 -> 987,947
+153,15 -> 357,15
+272,222 -> 272,201
+535,551 -> 120,966
+102,748 -> 102,281
+348,482 -> 129,482
+499,679 -> 499,821
+399,875 -> 399,285
+695,585 -> 733,547
+40,509 -> 95,564
+199,857 -> 228,886
+491,885 -> 978,885
+926,887 -> 104,65
+492,128 -> 957,593
+302,904 -> 302,906
+706,782 -> 706,217
+721,506 -> 721,675
+847,725 -> 583,989
+225,734 -> 942,17
+141,161 -> 161,161
+858,736 -> 858,433
+183,724 -> 13,554
+299,647 -> 299,420
+623,39 -> 358,304
+657,373 -> 657,976
+452,714 -> 452,735
+857,537 -> 392,72
+758,979 -> 758,457
+141,609 -> 141,100
+266,76 -> 974,784
+527,66 -> 236,357
+971,176 -> 865,282
+961,935 -> 74,48
+328,434 -> 328,663
+384,670 -> 12,670
+534,508 -> 334,508
+336,603 -> 202,469
+690,140 -> 807,140
+491,511 -> 491,166
+265,493 -> 236,493
+552,113 -> 552,329
+370,542 -> 370,688
+919,556 -> 488,125
+142,949 -> 107,949
+917,824 -> 360,267
+866,109 -> 624,109
+714,657 -> 714,155
+727,567 -> 727,570
+235,920 -> 235,683
+329,261 -> 55,261
+672,718 -> 113,159
+469,380 -> 66,783
+884,289 -> 884,15
+412,197 -> 496,197
+971,875 -> 20,875
+831,245 -> 831,946
+22,985 -> 391,985
+984,136 -> 187,933
+845,334 -> 660,519
+367,299 -> 367,912
+25,985 -> 946,64
+487,416 -> 487,453
+89,223 -> 723,857
+890,953 -> 19,82
+199,256 -> 199,521
+785,981 -> 710,906
+673,160 -> 673,682
+65,730 -> 421,730
+957,89 -> 832,89
+647,361 -> 33,361
+243,347 -> 784,888
+50,760 -> 50,372
+564,278 -> 564,846
+344,652 -> 832,652
+219,586 -> 219,502
+976,500 -> 976,650
+515,265 -> 744,36
+930,730 -> 930,332
+479,48 -> 592,48
+979,326 -> 374,326
+790,520 -> 375,520
+129,919 -> 511,537
+203,558 -> 212,558
+688,842 -> 502,842
+979,976 -> 90,87
+78,929 -> 78,478
+578,203 -> 802,427
+788,360 -> 260,888
+847,342 -> 212,977
+256,578 -> 821,13
+493,561 -> 712,342
+90,116 -> 181,116
+317,736 -> 963,90
+453,548 -> 37,548
+15,472 -> 514,971
+972,579 -> 956,579
+456,66 -> 349,66
+102,771 -> 769,771
+320,741 -> 327,748
+981,150 -> 592,150
+739,978 -> 739,804
+861,10 -> 142,729
+457,596 -> 580,596
+358,287 -> 237,408
+705,719 -> 59,73
+27,770 -> 27,133
+846,690 -> 846,464
+138,351 -> 174,315
+380,942 -> 380,985
+490,421 -> 803,734
+559,449 -> 761,449
+709,218 -> 718,218
+271,877 -> 271,814
+89,845 -> 918,16
+613,436 -> 976,73
+27,88 -> 867,88
+541,965 -> 739,767
+187,746 -> 916,17
+294,13 -> 333,13
+600,647 -> 925,647
+915,942 -> 41,68
+38,625 -> 176,763
+468,905 -> 468,727
+337,89 -> 337,581
+48,969 -> 732,285
+555,301 -> 555,610
+155,525 -> 985,525
+235,167 -> 700,167
+728,134 -> 728,289
+696,595 -> 892,595
+983,696 -> 401,114
+581,40 -> 515,40
+171,837 -> 975,33
+588,683 -> 734,683
+880,132 -> 231,132
+847,145 -> 332,660
+657,179 -> 657,18
+49,957 -> 496,510
+791,497 -> 552,736
+988,989 -> 10,11
+937,659 -> 937,461
+403,458 -> 403,637
+237,765 -> 237,813
+35,504 -> 35,663
+556,897 -> 802,897
+382,491 -> 786,895
+103,566 -> 528,566
+598,570 -> 623,570
+345,343 -> 345,985
+537,59 -> 537,386
+207,811 -> 974,44
+463,623 -> 463,21
+966,915 -> 966,965
+569,281 -> 569,183
+470,648 -> 470,666
+441,420 -> 817,796
+451,723 -> 908,266
+300,297 -> 840,297
+902,201 -> 902,912
+598,930 -> 654,930
+874,433 -> 874,176
+551,967 -> 795,967
+892,23 -> 137,778
+306,463 -> 679,90
+16,78 -> 16,980
+782,749 -> 782,117
+235,240 -> 244,231
+461,183 -> 981,183
+608,170 -> 608,640
+75,711 -> 645,141
+49,238 -> 488,238
+14,963 -> 947,30
+120,56 -> 120,73
+630,978 -> 316,664
+219,389 -> 803,973
+106,918 -> 978,46
+941,439 -> 788,592
+313,943 -> 325,943
+325,683 -> 325,67
+774,816 -> 774,908
+608,833 -> 608,679
+447,289 -> 447,135
+405,650 -> 405,406
+622,467 -> 636,467
+855,606 -> 855,663
+918,640 -> 918,831
+640,869 -> 640,904
+481,405 -> 481,791
+185,582 -> 21,746
+556,772 -> 114,330
+490,144 -> 490,591
+60,74 -> 974,988
+967,978 -> 10,21
+159,669 -> 486,342
+302,636 -> 302,771
+841,427 -> 793,427
+670,743 -> 234,743
+47,676 -> 233,490
+877,768 -> 123,14
+139,462 -> 139,541
+204,59 -> 204,300
+720,702 -> 720,525
+171,341 -> 787,341
+699,899 -> 293,899
+431,513 -> 431,849
+904,278 -> 124,278
+919,67 -> 815,67
+401,519 -> 688,232
+675,279 -> 675,137
+376,786 -> 362,786
+57,817 -> 801,73
+809,468 -> 410,867
+669,171 -> 669,65
+520,36 -> 218,36
+702,159 -> 709,159
+399,646 -> 399,828
+853,759 -> 853,91
+58,143 -> 867,952
+896,939 -> 42,85
+677,120 -> 646,120
+947,714 -> 737,714
+515,107 -> 752,344
+793,142 -> 793,789
+86,896 -> 967,15
+663,493 -> 833,493
+986,766 -> 293,766
+71,874 -> 71,417
+471,426 -> 148,426
+444,982 -> 142,982
+124,582 -> 846,582
+336,436 -> 257,436
+877,750 -> 177,50
+69,73 -> 911,915
+315,363 -> 315,45
+620,272 -> 556,272
+616,186 -> 331,186
+766,756 -> 59,49
+555,271 -> 555,183
+437,246 -> 454,246
+169,57 -> 169,688
+448,605 -> 420,605
+194,149 -> 960,915
+597,308 -> 597,512
+328,337 -> 328,349
+506,331 -> 506,144
+608,633 -> 838,863
+37,99 -> 767,829
+128,487 -> 128,246
+473,303 -> 473,529
+754,890 -> 754,269
+854,958 -> 957,958
+704,360 -> 526,360
+613,752 -> 260,752
+179,302 -> 805,302
+916,176 -> 519,176
+318,622 -> 161,622
+783,785 -> 322,785
+148,289 -> 802,943
+944,280 -> 671,280
+758,402 -> 442,86
+988,959 -> 56,27
+716,642 -> 429,642
+899,48 -> 899,111
+981,325 -> 168,325
+603,77 -> 474,77
+103,387 -> 112,387
+100,40 -> 160,40
+969,317 -> 109,317
+938,424 -> 938,179
+834,980 -> 527,980
+875,83 -> 22,83
+89,572 -> 582,79
+642,862 -> 642,247
+499,26 -> 499,242
+873,173 -> 206,840
+314,112 -> 314,388
+778,25 -> 778,944
+902,457 -> 964,519
+822,891 -> 623,891
+538,76 -> 618,156
+418,179 -> 204,179
+138,131 -> 300,131
+51,386 -> 51,764
+756,728 -> 330,302
+801,374 -> 801,506
+239,416 -> 781,958
+311,651 -> 848,651
+67,586 -> 67,250
+794,244 -> 794,515
+228,810 -> 368,670
+399,561 -> 682,561
+919,61 -> 868,61
+204,253 -> 224,253
+74,657 -> 74,235
+208,422 -> 722,422
+246,353 -> 441,548
+362,175 -> 362,688
+403,681 -> 403,821
+146,183 -> 23,183