25 files changed, 8414 insertions, 0 deletions

diff --git a/2021/inputs/day_1.txt b/2021/inputs/day_1.txt
new file mode 100644
index 0000000..42f77f8
--- /dev/null
+++ b/2021/inputs/day_1.txt
@@ -0,0 +1,2000 @@
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diff --git a/2021/inputs/day_10.txt b/2021/inputs/day_10.txt
new file mode 100644
index 0000000..661c46a
--- /dev/null
+++ b/2021/inputs/day_10.txt
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diff --git a/2021/inputs/day_11.txt b/2021/inputs/day_11.txt
new file mode 100644
index 0000000..674e736
--- /dev/null
+++ b/2021/inputs/day_11.txt
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diff --git a/2021/inputs/day_12.txt b/2021/inputs/day_12.txt
new file mode 100644
index 0000000..c3ec81f
--- /dev/null
+++ b/2021/inputs/day_12.txt
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diff --git a/2021/inputs/day_13.txt b/2021/inputs/day_13.txt
new file mode 100644
index 0000000..b551a62
--- /dev/null
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+
+fold along x=655
+fold along y=447
+fold along x=327
+fold along y=223
+fold along x=163
+fold along y=111
+fold along x=81
+fold along y=55
+fold along x=40
+fold along y=27
+fold along y=13
+fold along y=6
diff --git a/2021/inputs/day_14.txt b/2021/inputs/day_14.txt
new file mode 100644
index 0000000..e84aae5
--- /dev/null
+++ b/2021/inputs/day_14.txt
@@ -0,0 +1,102 @@
+SNPVPFCPPKSBNSPSPSOF
+
+CF -> N
+NK -> B
+SF -> B
+HV -> P
+FN -> S
+VV -> F
+FO -> F
+VN -> V
+PV -> P
+FF -> P
+ON -> S
+PB -> S
+PK -> P
+OO -> P
+SP -> F
+VF -> H
+OV -> C
+BN -> P
+OH -> H
+NC -> F
+BH -> N
+CS -> C
+BC -> N
+OF -> N
+SN -> B
+FP -> F
+FV -> K
+HP -> H
+VB -> P
+FH -> F
+HF -> P
+BB -> O
+HH -> S
+PC -> O
+PP -> B
+VS -> B
+HC -> H
+NS -> N
+KF -> S
+BO -> V
+NP -> S
+NF -> K
+BS -> O
+KK -> O
+VC -> V
+KP -> K
+CK -> P
+HN -> F
+KN -> H
+KH -> N
+SB -> S
+NO -> K
+HK -> H
+BF -> V
+SV -> B
+CV -> P
+CO -> P
+FC -> O
+CP -> H
+CC -> N
+CN -> P
+SK -> V
+SS -> V
+VH -> B
+OS -> N
+FB -> H
+NB -> N
+SC -> K
+NV -> H
+HO -> S
+SO -> P
+PH -> C
+VO -> O
+OB -> O
+FK -> S
+PN -> P
+VK -> O
+NH -> N
+OC -> B
+BP -> O
+PF -> F
+KB -> K
+KV -> B
+PO -> N
+NN -> K
+CH -> O
+KC -> P
+OP -> V
+VP -> F
+OK -> P
+FS -> K
+CB -> S
+HB -> N
+KS -> O
+BK -> C
+BV -> O
+SH -> H
+PS -> N
+HS -> K
+KO -> N
diff --git a/2021/inputs/day_15.txt b/2021/inputs/day_15.txt
new file mode 100644
index 0000000..7cd7dc4
--- /dev/null
+++ b/2021/inputs/day_15.txt
@@ -0,0 +1,100 @@
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diff --git a/2021/inputs/day_16.txt b/2021/inputs/day_16.txt
new file mode 100644
index 0000000..57468d0
--- /dev/null
+++ b/2021/inputs/day_16.txt
@@ -0,0 +1 @@
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diff --git a/2021/inputs/day_17.txt b/2021/inputs/day_17.txt
new file mode 100644
index 0000000..039df20
--- /dev/null
+++ b/2021/inputs/day_17.txt
@@ -0,0 +1 @@
+target area: x=206..250, y=-105..-57
diff --git a/2021/inputs/day_18.txt b/2021/inputs/day_18.txt
new file mode 100644
index 0000000..cc88c31
--- /dev/null
+++ b/2021/inputs/day_18.txt
@@ -0,0 +1,100 @@
+[[[0,6],[[8,9],[3,7]]],[[[3,4],[7,0]],[[6,9],[4,8]]]]
+[[2,2],[[[7,7],5],[[0,7],2]]]
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+[[[[5,1],[9,3]],8],[4,[2,[6,6]]]]
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+[[[3,[6,2]],[7,[9,4]]],3]
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+[[[[0,7],9],[[6,6],[8,4]]],[[[9,2],[4,8]],[[8,5],[0,6]]]]
+[[6,[[5,6],[3,8]]],[[8,9],[4,3]]]
+[[[[0,6],1],[[2,4],[1,4]]],[[7,5],[8,3]]]
+[[[[0,7],1],[[5,7],7]],[[[3,3],[6,7]],[[2,8],[2,9]]]]
+[[7,7],[[1,[3,7]],9]]
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+[[[[6,2],[2,6]],3],[6,[[4,7],2]]]
+[[[5,[2,3]],[8,[8,7]]],[[0,0],2]]
+[[1,6],[7,[7,[9,0]]]]
+[[[7,[7,6]],[7,4]],[[7,2],[6,5]]]
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+[[1,[[7,2],5]],[[[6,0],[8,1]],8]]
+[[[[0,6],[6,6]],2],[[4,2],[2,4]]]
+[[5,[9,0]],[2,5]]
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+[[[[8,2],0],[5,[4,3]]],0]
+[[[0,[7,8]],[[9,6],7]],[[7,[1,0]],[[0,3],7]]]
+[[[[8,3],0],[[4,8],[7,9]]],[[7,1],[[8,4],[4,4]]]]
+[[[2,0],[[6,6],7]],[[2,[3,9]],[[5,6],[4,6]]]]
+[[[[1,4],8],[9,6]],8]
+[[7,[9,1]],[1,[[8,5],[6,8]]]]
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+[[[7,9],[[2,6],[2,4]]],[[2,[1,7]],[[3,9],[8,9]]]]
+[[[[4,5],[4,7]],[[4,0],[9,9]]],0]
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+[[[7,9],[7,3]],[[1,[7,1]],[1,2]]]
+[[[7,0],[[1,0],8]],[[9,[7,6]],[9,[7,2]]]]
+[[[8,1],[[0,6],2]],[9,[[1,8],[5,4]]]]
+[6,[[[9,5],[5,4]],3]]
+[[4,[[6,8],[8,3]]],[[9,[0,9]],7]]
+[[[6,9],[[2,3],8]],[[9,[5,1]],[[7,6],5]]]
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+[[[9,[8,0]],7],[[[4,5],8],[[4,3],[8,5]]]]
+[[9,[7,0]],[[3,[1,7]],[[7,0],7]]]
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+[[[[0,5],0],[[8,4],4]],[[7,9],8]]
+[[[0,[0,3]],[0,[8,8]]],[[[2,1],3],4]]
+[0,[[4,1],[[9,9],2]]]
+[[3,[7,[6,7]]],[0,2]]
+[7,2]
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+[[7,1],[[1,[9,9]],[[8,4],8]]]
+[[[1,[8,3]],[[3,7],0]],[[2,0],[[1,6],[9,9]]]]
+[[[1,4],[1,4]],[[2,[2,7]],[2,[7,1]]]]
+[[1,[[6,8],[8,6]]],[0,[8,0]]]
+[1,[[2,0],7]]
+[[[[6,0],9],[[6,9],[8,3]]],[[3,[9,9]],6]]
+[[[[9,8],[2,8]],[2,3]],[6,2]]
+[[[6,[2,2]],7],[[3,[7,8]],7]]
+[[[5,[3,7]],1],[[[4,0],3],[5,4]]]
+[[[7,[4,3]],[9,[4,4]]],7]
+[[2,[[1,5],6]],[[2,3],[[2,5],[7,1]]]]
+[[[[3,9],[1,9]],3],[5,[[0,6],[3,2]]]]
+[[[3,[7,5]],[[7,7],[2,8]]],[4,[1,[0,0]]]]
+[[4,[2,[8,7]]],[[[0,5],0],9]]
+[9,[9,[6,4]]]
+[[5,[[4,9],2]],[9,9]]
+[[1,[[6,0],[9,9]]],[[[8,4],1],[[5,2],[6,1]]]]
+[[1,[[9,0],8]],6]
diff --git a/2021/inputs/day_19.txt b/2021/inputs/day_19.txt
new file mode 100644
index 0000000..e2f977f
--- /dev/null
+++ b/2021/inputs/day_19.txt
@@ -0,0 +1,856 @@
+--- scanner 0 ---
+785,-772,752
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+-654,-601,-321
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+
+--- scanner 1 ---
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+
+--- scanner 2 ---
+-4,133,0
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+
+--- scanner 3 ---
+900,-493,416
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+-746,-725,-569
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+37,-7,32
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+
+--- scanner 4 ---
+-540,515,741
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+562,-779,560
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+482,-908,548
+-585,-571,-807
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+-464,-655,596
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+
+--- scanner 5 ---
+619,-451,-778
+-517,534,-801
+-617,683,-780
+-379,406,390
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+-704,-496,482
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+
+--- scanner 6 ---
+-665,672,665
+-565,744,642
+-933,-475,-523
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+
+--- scanner 7 ---
+465,801,-361
+-583,551,482
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+-593,533,523
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+-451,-805,455
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+
+--- scanner 8 ---
+-834,731,729
+-579,282,-466
+-376,-761,734
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+-786,498,746
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+766,-950,895
+743,-966,-388
+
+--- scanner 9 ---
+374,-543,718
+-699,-584,548
+-401,-360,-681
+-666,527,782
+-147,-126,155
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+-722,-698,432
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+
+--- scanner 10 ---
+-57,48,-5
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+-442,-603,-255
+-812,583,625
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+
+--- scanner 11 ---
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+-488,600,604
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+
+--- scanner 12 ---
+-438,505,-689
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+-436,452,649
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+
+--- scanner 13 ---
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+--- scanner 17 ---
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+--- scanner 20 ---
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+--- scanner 22 ---
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+--- scanner 23 ---
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+--- scanner 24 ---
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+--- scanner 25 ---
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+--- scanner 26 ---
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+--- scanner 27 ---
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+--- scanner 28 ---
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+--- scanner 29 ---
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+--- scanner 30 ---
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diff --git a/2021/inputs/day_2.txt b/2021/inputs/day_2.txt
new file mode 100644
index 0000000..917f466
--- /dev/null
+++ b/2021/inputs/day_2.txt
@@ -0,0 +1,1000 @@
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diff --git a/2021/inputs/day_23.txt b/2021/inputs/day_23.txt
new file mode 100644
index 0000000..3d20443
--- /dev/null
+++ b/2021/inputs/day_23.txt
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diff --git a/2021/inputs/day_24.txt b/2021/inputs/day_24.txt
new file mode 100644
index 0000000..9c0248a
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diff --git a/2021/inputs/day_25.txt b/2021/inputs/day_25.txt
new file mode 100644
index 0000000..15fb35a
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index 0000000..7320494
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diff --git a/2021/inputs/day_4.txt b/2021/inputs/day_4.txt
new file mode 100644
index 0000000..b01c04f
--- /dev/null
+++ b/2021/inputs/day_4.txt
@@ -0,0 +1,601 @@
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diff --git a/2021/inputs/day_5.txt b/2021/inputs/day_5.txt
new file mode 100644
index 0000000..4fa6674
--- /dev/null
+++ b/2021/inputs/day_5.txt
@@ -0,0 +1,500 @@
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+500,242 -> 371,242
+88,126 -> 405,126
+983,941 -> 61,19
+242,519 -> 242,489
+519,957 -> 926,550
+606,181 -> 606,432
+873,216 -> 851,194
+880,924 -> 880,844
+321,119 -> 801,599
+963,392 -> 726,155
+190,655 -> 190,305
+542,676 -> 542,819
diff --git a/2021/inputs/day_6.txt b/2021/inputs/day_6.txt
new file mode 100644
index 0000000..4b2dc63
--- /dev/null
+++ b/2021/inputs/day_6.txt
@@ -0,0 +1 @@
+4,3,4,5,2,1,1,5,5,3,3,1,5,1,4,2,2,3,1,5,1,4,1,2,3,4,1,4,1,5,2,1,1,3,3,5,1,1,1,1,4,5,1,2,1,2,1,1,1,5,3,3,1,1,1,1,2,4,2,1,2,3,2,5,3,5,3,1,5,4,5,4,4,4,1,1,2,1,3,1,1,4,2,1,2,1,2,5,4,2,4,2,2,4,2,2,5,1,2,1,2,1,4,4,4,3,2,1,2,4,3,5,1,1,3,4,2,3,3,5,3,1,4,1,1,1,1,2,3,2,1,1,5,5,1,5,2,1,4,4,4,3,2,2,1,2,1,5,1,4,4,1,1,4,1,4,2,4,3,1,4,1,4,2,1,5,1,1,1,3,2,4,1,1,4,1,4,3,1,5,3,3,3,4,1,1,3,1,3,4,1,4,5,1,4,1,2,2,1,3,3,5,3,2,5,1,1,5,1,5,1,4,4,3,1,5,5,2,2,4,1,1,2,1,2,1,4,3,5,5,2,3,4,1,4,2,4,4,1,4,1,1,4,2,4,1,2,1,1,1,1,1,1,3,1,3,3,1,1,1,1,3,2,3,5,4,2,4,3,1,5,3,1,1,1,2,1,4,4,5,1,5,1,1,1,2,2,4,1,4,5,2,4,5,2,2,2,5,4,4
diff --git a/2021/inputs/day_7.txt b/2021/inputs/day_7.txt
new file mode 100644
index 0000000..84d7622
--- /dev/null
+++ b/2021/inputs/day_7.txt
@@ -0,0 +1 @@
+1101,1,29,67,1102,0,1,65,1008,65,35,66,1005,66,28,1,67,65,20,4,0,1001,65,1,65,1106,0,8,99,35,67,101,99,105,32,110,39,101,115,116,32,112,97,115,32,117,110,101,32,105,110,116,99,111,100,101,32,112,114,111,103,114,97,109,10,1304,510,261,432,1,767,525,1663,1598,125,84,924,216,1049,365,4,21,226,131,178,666,1134,58,839,1065,670,419,11,297,28,80,258,811,659,1288,21,17,436,1184,823,667,7,499,249,406,157,112,715,220,93,710,148,152,1192,15,493,1551,473,760,503,177,124,123,236,848,221,658,771,347,23,264,739,1583,747,17,336,998,159,679,119,2,160,412,873,1480,337,92,369,136,3,188,683,496,214,131,330,493,649,136,503,249,342,240,728,494,150,25,146,95,1328,401,580,743,385,85,1011,466,36,228,1394,77,1009,46,751,782,1501,464,1046,4,317,1566,1661,822,107,487,208,727,53,55,355,370,1319,16,18,965,1582,190,38,386,169,766,111,262,229,248,318,368,70,18,302,87,218,404,265,2,109,62,557,714,1174,429,1082,786,37,470,195,408,598,935,1224,11,83,318,475,354,342,699,209,372,942,801,30,1065,4,110,969,449,266,50,314,771,890,314,394,316,211,1238,84,574,120,698,1382,1039,670,121,281,241,491,742,802,194,41,573,473,824,1283,59,371,1167,32,1645,115,58,845,11,408,1284,414,1618,240,364,991,111,517,146,256,616,968,130,98,414,13,152,332,96,816,366,214,69,1072,1225,98,122,554,236,14,499,89,793,119,945,511,476,112,1201,501,9,23,517,277,283,1600,581,290,248,472,38,144,178,645,477,1016,139,123,4,671,370,1025,290,20,1680,856,212,44,93,656,1163,384,852,461,1248,79,341,1125,812,746,511,1461,420,1070,22,126,274,1698,526,949,20,865,66,1244,157,275,670,384,1142,696,43,74,344,893,237,327,135,272,690,1032,395,1,16,521,1573,304,512,466,243,171,913,323,325,82,16,462,457,1609,24,98,22,528,158,79,1012,60,146,58,504,503,1,42,78,164,3,439,653,217,251,94,584,333,435,254,170,1213,671,548,799,332,434,487,61,710,136,551,556,722,316,365,1403,115,104,597,137,881,577,1334,41,649,177,196,434,191,101,248,14,71,1053,44,1074,51,607,65,161,922,235,132,247,1412,500,1409,15,86,72,327,878,507,1379,454,109,1250,184,19,284,1057,353,476,807,577,305,466,40,136,16,883,516,253,150,125,49,102,404,1606,518,94,1042,204,443,444,22,1197,168,766,1466,1053,695,565,77,406,694,102,84,414,686,800,157,7,516,440,139,1538,144,1327,851,1526,69,315,1078,678,247,1579,100,254,947,758,603,44,535,1242,1117,1119,645,203,97,88,437,886,408,566,351,36,0,461,1098,415,1381,1217,1763,202,1106,466,30,237,757,313,390,38,344,1254,1275,343,278,1064,1116,70,279,276,214,1153,306,67,488,683,432,53,128,91,1082,403,117,1169,568,60,578,475,657,43,509,434,128,1115,872,333,73,954,789,590,185,1305,352,574,266,1634,731,156,562,247,356,743,689,298,637,1125,590,761,123,1508,33,0,558,146,888,236,668,53,94,619,591,422,44,1114,1284,806,39,816,47,59,76,1090,1102,7,1307,676,1161,473,376,175,224,431,284,875,86,28,99,700,459,204,673,1001,31,302,291,386,259,4,181,1048,274,1661,347,614,760,187,1118,196,1076,219,1194,226,909,189,208,265,601,503,693,213,16,63,25,108,133,979,56,195,250,294,920,231,435,1004,352,469,55,1374,605,72,714,534,504,1411,128,724,1216,7,317,948,285,668,320,97,316,298,145,605,40,486,324,399,336,612,386,328,631,44,366,103,109,219,530,39,654,341,132,1090,50,15,654,801,791,169,746,1512,660,383,67,762,46,236,184,51,1051,1161,347,673,554,523,3,463,31,132,258,413,18,293,986,699,608,289,175,70,217,136,857,473,585,14,636,189,119,128,129,358,560,580,425,236,1194,1182,213,79,36,162,200,179,170,892,1398,336,1073,76,798,231,58,216,1134,175,392,688,342,28,300,672,1160,501,44,79,357,1411,856,27,471,600,303,35,546,1466,74,359,234,1200,657,224,431,802,0,584,784,1245,15,776,28,1464,191,275,639,569,179,908,173,1041,630,907,1520,248,1,34,596,53,44,9,782,777,295,818,1295,1115,468,34,530,349,271,99,344,923,733,124,170,208,20,744,530,582,35,58,938,721,253,934,326,528,722,123,0,623,382,889,929,454,457,1024,43,293,521,548,291,654,506,307,1031,1,390,321,727,937,1000,57,52,136,69,920,19,269,950,578,119,207,14,244,274,171,971,548,335,748,553,196,531
diff --git a/2021/inputs/day_8.txt b/2021/inputs/day_8.txt
new file mode 100644
index 0000000..05a40c6
--- /dev/null
+++ b/2021/inputs/day_8.txt
@@ -0,0 +1,200 @@
+cgdf eagcbf fc adefg eacdb fbedga geafcd efc dacfe fdgaecb | dcefbag dgcf fc daefc
+bdecf dcagb gbf gcbdf deacbf fg fdebgc fegdcba dgef bgefac | dbfec gbacefd gf bfg
+cfeag becgda bag ab abcd ecgdb gdefba agcbe gdcebf fgebadc | ab cdegbf cbda cgfebad
+gc bcfgea ebdcf cbedg edbfac ebfdgc bacfged ceg dfcg abdeg | eacbdf geabd dcbef fcgebd
+fgbceda afdbge fbcad badgec cfde gfcba ebcda afd abfdce df | fad fdcab fda befcadg
+gfacd dcf bacedg afgec afdbec df agcdb agcdebf gfbd cdgbfa | df df bceagd ecafg
+gbdfe ag gda bfadcg gbedfa gdefcb beag gedaf cdaef bdgcfea | gacfdb gedfab ga gda
+deabg cag cfdea bfgcda ecgb fcbedga cg dcage agebdc gdbfea | bacefdg bdcgfa adcgfb afedc
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+fa adfebc gdacef bfeca begca bfad bdfce febcagd dfgceb fea | afe cfdgbe af eabfc
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+cfbedg gdafbe fgebd bc cbgdae bcagfed ecgfa bcfge bgc bdcf | gafebdc bgfdce bcfged dfgbe
+cafebgd gafdc bgcef bcagf fba cabefd ba baeg feabgc bdfcge | fba ab ab gaeb
+ecgfbda afbeg fcdeg fecbga cea afbc abdegc befagd ac gcaef | beadgc eca cae gebacfd
+cedag gf afbcd cbaedgf eacbdg acfegb fcadg fgedac gfed fgc | dacbf daecgb bagcef cgf
+fagbd gdaceb ebf efbad gacebf fcde ef ceabdf aecgbfd dbeac | dbeac bagfd cbfdae fbe
+begadcf aedb cgefa ebdgac acfdbg cdebfg agebc ba bac gdbce | ab faceg bac adbe
+bgde gb abefcg fdaecg gcbdf ebdgafc dfgce gfebdc cgb acfdb | fdbcg gb dcegaf cfdge
+efbagd gefcdb dgbefca badce cegdb efdgb gfcbae cge dcgf cg | dbeca bdaec ecg egc
+begdca caef gfebd cgbefda cgf cf gdecf cfagde cagbfd agdce | dgfcbea fcae abcfgd acdgbf
+cadfbeg acd egbad dcbf efcab cd agfbce daebc gefdac afbced | bdefacg cd abgfec dgecfa
+fd bfd bgcfd bagcfe edgf fcbge acbdg cdebgf efbadc bgeacdf | df bdcga fbd gbedfc
+fdgbca deca de edagbc ebadg gbfea bcgda bcdegf dge gcebadf | abgcfde de gdeba acde
+df gdbecaf bdfe fbcgae fedabg fdaegc cgdba fdg adbgf egbfa | gdf fbgaec egafb gadbf
+egfbd cefg gfdbac fbdea bedcg gadcfeb gdefbc gf bfg adgcbe | dfebg dbacfg gcafdb dbafe
+bgadc bacfdg acbdge egafdcb ea deca cfbaeg eab dabeg fgbde | aecd bdcag dgeacb bafdecg
+cfbeag febcgad cge dacbg facdbg ge gcbde eadg acbgde fcbed | cagbed gcabfe gdcfbae bdgec
+cgefa eabf gbedc gcefb cdbfaeg dfabgc fb beacgf gfb gfedac | bf afceg bfg fgaec
+fdg gd edfcbg gaed gfcda febcga ecdafg cgfebad fgcae dfcab | cafegd cedbagf gfcea aecgfb
+dcafbe ebcadfg adcgbf abfcd bg fdaeg agfdb gcba bgd efbgdc | cgab ecbdgf agdbf efcbgd
+adcbf dagfcb dfecb dagc feadbg ad bgacf cegdbfa bad gcafbe | cfdbage deafcbg fcagdb cedgbfa
+afbecg fe egdcf gef afde acdegf feadgbc fdbgca gdceb fgdac | edcbg edafgcb afgcdb dbgce
+gbdfc aecdgb ef bfe acdbe aefc fceadb bcaefgd agbefd bfced | fbe gcbdf fcea adbec
+fcgae ebcfa becdagf fgadcb cba bfdea bedc ebacdf bfgead bc | egbfadc cb cb caefg
+efbd abcde cfeag aecbdg daf df eafcd gcafbd fdeabc cgbefad | gbefadc fecga cgfae acdbe
+afegbc becaf gaf fcagbd egbf adbcef gafec aedcg afdcegb gf | bcfae efacb bcaef fga
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+fdebac dgac dfega dec feadbcg fdcgea cefgb dfaegb egcdf dc | decgf gdca ecd cfgaebd
+fabdgc dceab dbfgc dagfeb begdfc bdgca dabfcge dga ga facg | gfacdb adgcbef bgedaf facg
+cfeag cgdfa aegb fecdgb dfacbe dcgbfae ebfca ge egc gcbafe | ebgfdca aebg gcebfd cbfea
+dcafg edcgba afebd faedbgc bgef edafbc fabdg bgefad dbg bg | ebdagc abgefd afcebd bfeadc
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+acfb bec fabged gbeafc ecgabd fecdg gabfe bc cbgef gcbeadf | cbaf bafcdge baegf fagbde
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+fcag afecbg cabdge dbefa cef ecbgfda begdcf fceba fc gbaec | gfca bdcegf cfe aebcfdg
+cfbga df bgaed dgef eafdgbc cdabfe bdecag adgefb dfa agbdf | fd gdfe df df
+edagfb cdfbaeg aecd gcbad dcgbef dbeagc da dcegb dab fgcba | cdae ecad abgdfec cfgab
+ebc agbcfe eb bdfcag decgbaf agecd egdbfc egacb afeb bacgf | ebc cbe abfe fegbcd
+dcefabg bfaed feg ebgfa eg egad cgdebf cgfab degbfa acdefb | edbfgca cdfaeb gfe feg
+adfebc dbgce ecfdgb ba daegb beadgc dfgea dcegfab agcb aeb | cagb acebfdg cbga eafgbcd
+afcbged gfdbc cd bdc edgfbc befacg edcf abdceg dgbfa cfegb | gfcdb gebcf bcd fdce
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+afcebg dbfag dabe dgbef cebfgd gdafc egadbcf ba abg afdgbe | bga bga gab ba
+ecdabg defgc bdacgf dae eadcg cdbag gcbdafe aecb adebgf ea | bfedagc adcbg eagdc bdgeaf
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+ebfgc daeb cae gceba cgabfde cgabdf ea abcgd bdaecg ecgadf | ace eagbcfd ea efacgd
+bdeaf ag bgdeca dag agfdb agcf dcgbf cfgbeda dfcbeg cdagbf | fbaed fgdabce beacdg ecabdfg
+ecagf gcfdea ba gbfa badgce cab abfce fecdb bagcfe bafegcd | faecdg ab bedcf edcfb
+geadf adgebf eda cdgfab bedg bfadec de gefbdca adfbg gafce | ecagfbd cafge de eda
+fb agcbe gbfc cbaegd ecgfdab edafg bdcefa efgba bfa gabecf | bfa fcbade gceab fba
+bdaefcg dgacfe fbgadc gfbea dcae aegdf ad gcdfe bgdcef dga | cdae da cade gdfcae
+cbeg eacfg fbcage acfdge bgeafd gbfacde afcgb bga gb cbdfa | bg gabfde gba fdagbe
+bca defgab bc gfcae gaebd dfebac bcage deafgcb gcebda cgbd | edbgfa cb gfcea cb
+fcb cgadfeb bcagf abdgf cegdfa begcaf gcbe fcebda cafeg cb | cfeadbg cfb dfbga gdaecf
+fdebag abdcge gfdb efbac gcefad eagfb agb degaf bg acfegbd | agefbdc gfdb gb bedafg
+ec dce cgbaed egabdf dbeacf cagdf ebcg agcde gbedacf eagbd | bafecd eadgbc cdgfa degac
+beg fageb bfgad ge abecf bdcfae caeg efadgbc egbfdc cgebaf | dfabg fabgd fbdceg beg
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+gab cagdfb fgecdb fgaed ab gcbdf baecgd abcdfge gbfad bacf | gbdfca gab bgdcea abg
+ecfga afdbeg gdceafb gcedf ecgabf afc dcgfab ca bcae gbaef | cgeadbf fagec cfa aebfdcg
+fgaebc aefcdg fdceb dfbeg gbf agefbd fegdbac bdga bg fgdae | bcdfe fgb acfgbe gdab
+dgaecf fadbgc cdfeab cagbe cbd bd bdeac gadbfce afced bdfe | gfdace febd db cgfade
+bfdgac efgdab abd edcbf baeg ab afegd dagecf cgbfdae edbfa | gdaef dbefc dab ba
+acgb bda gdaefb eabcfdg ba abced gdcbe dacef gcdeab bcdefg | adefc bcade deagcb adb
+fgabc cdfabg cga dgcfeb deagbc ag fgda dcfagbe caefb fgbdc | dagfbec bfacg gfdbac edgcab
+gcfdeb fbgdca beagf fgbad ecfba efg egbfacd ge daeg defgba | fcbgade fbgae fbcae adgbfe
+abe dgab defca dbeacg ba fgbdce cbdeg bfceag cebagdf eadcb | bgda dfgbce dfegbc gbcfaed
+cbafg efdgcb cfaebg afecb aefg gafcdeb ecf ef becda fdgcab | cafgeb acgbf acebgf dcbfag
+eb cebg dbe dceab dcbage ecgadf gcaed cbfda agbdef gadefcb | agebdc baedc dacfb gcebda
+degcb cagbef dfceba gbf fg gbacdf gfeacdb fbgec fgae ebafc | bfcdga bfg fbaec fbg
+dbgaf bca gacde cefbga acebgd edcb gbacd fbcagde cb cdefga | gcdea fgcebad cab cdebfga
+bdgfea gb fcdeg gfcdae ecgfbd cdgb egcfb ebafdcg befca gbf | gb dagebcf dgfec dfgcbe
+geacb fg badfc dagecfb bfcgad gfb fcbga gcdf efadbg befadc | dfbgcae badgcf dcbfa aebcg
+febdc aecfd aebgfd gcdfbe dbgcf bef adbfcg dbefacg gbce be | feb eb ebdcf dceaf
+acde cdegb decfbga gebac eag cegfbd ea cdbgea ebgafd cbagf | ae gea bgdafe cagbe
+gefac egbfadc degbfa badgce gef fe efgbac agecb fcdag bfec | afdegb adbecg agbcde agfce
+gfceb bg edcbf afcegd gacb fagec fegdbca gbaefc fgb edgafb | bgf agcb eagcf facged
+bdcagef dcfbg ceafd bead adfcb fgeadc cba cefbga ba cfdeba | gcabfed decfag ecgdfa fgbdc
+cdbfge bfgac efgad cbae daegbcf fgaecb ebg begfa be gdacbf | eb be efbga adefg
+gfabd bgaed gf cebfga fgb eafcbdg degf aegfbd acdfb gdbeac | abged aebdfg bfgeca bdagec
+gcafd efagcd edcg bafdeg bfgdeac ebcgaf gd facdb dgf efagc | fbadc fbcda cbeafg cdebgfa
+dfeba cfb dbcgef dbceafg efgca cbeaf fecdag fbgcea bc gacb | aebcf fcb adgfce fcbea
+badgf agdcef dafbec ag gabe dfeab dgfeab bdgaefc gfa gdbfc | eadfb dcefag cafdebg edfagc
+bef eb abec fabgec facbdg afbcg defbag dcfge fcbge deafgbc | cgebaf eacb dcagbf bfcga
+bdfe dgebcf bcgefa ed cbeadg gefdcba fbceg dcgfe facdg dge | dcfge de cgdabe dge
+gbadc dgbefac cgbafd dfcg dfacb ecgabf cg gcb bcfdae bedag | cbdga cdbag gdabfc bdeag
+bagecd cf fbedcg cefa cafbd bfc cbedfa gafbd baecfgd caedb | gfdebc cdeab cfae cfb
+fgdab efbacd decb cgaefb dbcaf acfdge fbc fdaec edgabcf cb | edbc bc fgecab cfgade
+dcbga adfbc df decfab fbed cfeba afd egfcadb dcaegf befcga | ebfd bgafec aebcgf ebdf
+cbdaegf fdegcb cgbd dafecg dbfgae dfbce gdfec bdf bd eafcb | cbdg dcgb gdfaec ecabfdg
+bgfade bdeagc befcd daecgfb efb abecd eacbfd gdcbf cfae ef | cfea ecdba agdcbfe gbaefcd
+fagd dcafbe gdabfec df bgcfe cgfdba bgadce agdbc fbd gbcdf | bgcdf df edbcfag df
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diff --git a/2021/inputs/day_9.txt b/2021/inputs/day_9.txt
new file mode 100644
index 0000000..9494363
--- /dev/null
+++ b/2021/inputs/day_9.txt
@@ -0,0 +1,100 @@
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