diff --git a/2021/d14/ex1/ex1.py b/2021/d14/ex1/ex1.py
deleted file mode 100755
index da06537..0000000
--- a/2021/d14/ex1/ex1.py
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/usr/bin/env python
-
-import itertools
-import sys
-from collections import Counter
-from typing import Dict, Iterator, List, Tuple, TypeVar
-
-Rules = Dict[str, str]
-
-T = TypeVar("T")
-
-
-def nth(iterable: Iterator[T], n: int) -> T:
-    return next(itertools.islice(iterable, n, None))
-
-
-def solve(input: List[str]) -> int:
-    def parse() -> Tuple[str, Rules]:
-        template = input[0]
-        rules = {
-            pair: insertion
-            for pair, insertion in map(lambda s: s.split(" -> "), input[2:])
-        }
-        return template, rules
-
-    def step(template: str, rules: Rules) -> str:
-        res: List[str] = []
-
-        # Look at all pairs
-        for a, b in zip(template, template[1:]):
-            res.append(a)
-            if (a + b) in rules:
-                res.append(rules[a + b])
-
-        # Add the last element
-        res.append(template[-1])
-        return "".join(res)
-
-    def polymerize(template: str, rules: Rules) -> Iterator[str]:
-        while True:
-            yield (template := step(template, rules))
-
-    def score(template: str) -> int:
-        counts = [n for __, n in Counter(template).most_common()]
-        return counts[0] - counts[-1]
-
-    template, rules = parse()
-    return score(nth(polymerize(template, rules), 10 - 1))
-
-
-def main() -> None:
-    input = [line.strip() for line in sys.stdin.readlines()]
-    print(solve(input))
-
-
-if __name__ == "__main__":
-    main()
diff --git a/2021/d14/ex1/input b/2021/d14/ex1/input
deleted file mode 100644
index bae5f8e..0000000
--- a/2021/d14/ex1/input
+++ /dev/null
@@ -1,102 +0,0 @@
-NNSOFOCNHBVVNOBSBHCB
-
-HN -> S
-FK -> N
-CH -> P
-VP -> P
-VV -> C
-PB -> H
-CP -> F
-KO -> P
-KN -> V
-NO -> K
-NF -> N
-CO -> P
-HO -> H
-VH -> V
-OV -> C
-VS -> F
-PK -> H
-OS -> S
-BF -> S
-SN -> P
-NK -> N
-SV -> O
-KB -> O
-ON -> O
-FN -> H
-FO -> N
-KV -> S
-CS -> C
-VO -> O
-SP -> O
-VK -> H
-KP -> S
-SK -> N
-NC -> B
-PN -> N
-HV -> O
-HS -> C
-CN -> N
-OO -> V
-FF -> B
-VC -> V
-HK -> K
-CC -> H
-BO -> H
-SC -> O
-HH -> C
-BV -> P
-OB -> O
-FC -> H
-PO -> C
-FV -> C
-BK -> F
-HB -> B
-NH -> P
-KF -> N
-BP -> H
-KK -> O
-OH -> K
-CB -> H
-CK -> C
-OK -> H
-NN -> F
-VF -> N
-SO -> K
-OP -> F
-NP -> B
-FS -> S
-SH -> O
-FP -> O
-SF -> V
-HF -> N
-KC -> K
-SB -> V
-FH -> N
-SS -> C
-BB -> C
-NV -> K
-OC -> S
-CV -> N
-HC -> P
-BC -> N
-OF -> K
-BH -> N
-NS -> K
-BN -> F
-PC -> C
-CF -> N
-HP -> F
-BS -> O
-PF -> S
-PV -> B
-KH -> K
-VN -> V
-NB -> N
-PH -> V
-KS -> B
-PP -> V
-PS -> C
-VB -> N
-FB -> N
diff --git a/2021/d14/ex2/ex2.py b/2021/d14/ex2/ex2.py
deleted file mode 100755
index 46a9e40..0000000
--- a/2021/d14/ex2/ex2.py
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/usr/bin/env python
-
-import itertools
-import sys
-from copy import deepcopy
-from typing import Counter, Dict, Iterator, List, NamedTuple, Tuple, TypeVar
-
-
-class Template(NamedTuple):
-    bigrams: Counter[str]
-    counts: Counter[str]
-
-
-Rules = Dict[str, str]
-
-T = TypeVar("T")
-
-
-def nth(iterable: Iterator[T], n: int) -> T:
-    return next(itertools.islice(iterable, n, None))
-
-
-def solve(input: List[str]) -> int:
-    def parse() -> Tuple[Template, Rules]:
-        bigrams = Counter(a + b for a, b in zip(input[0], input[0][1:]))
-        counts = Counter(input[0])
-        rules = {
-            pair: insertion
-            for pair, insertion in map(lambda s: s.split(" -> "), input[2:])
-        }
-        return Template(bigrams, counts), rules
-
-    def step(template: Template, rules: Rules) -> Template:
-        bigrams: Counter[str] = Counter()
-        counts = deepcopy(template.counts)
-        for p, n in template.bigrams.items():
-            if p in rules:
-                insertion = rules[p]
-                bigrams[p[0] + insertion] += n
-                bigrams[insertion + p[1]] += n
-                counts[insertion] += n
-            else:
-                # Counts are not changed in this case
-                bigrams[p] = n
-        return Template(bigrams, counts)
-
-    def polymerize(template: Template, rules: Rules) -> Iterator[Template]:
-        while True:
-            yield (template := step(template, rules))
-
-    def score(template: Template) -> int:
-        nums = [n for __, n in template.counts.most_common()]
-        return nums[0] - nums[-1]
-
-    template, rules = parse()
-    return score(nth(polymerize(template, rules), 40 - 1))
-
-
-def main() -> None:
-    input = [line.strip() for line in sys.stdin.readlines()]
-    print(solve(input))
-
-
-if __name__ == "__main__":
-    main()
diff --git a/2021/d14/ex2/input b/2021/d14/ex2/input
deleted file mode 100644
index bae5f8e..0000000
--- a/2021/d14/ex2/input
+++ /dev/null
@@ -1,102 +0,0 @@
-NNSOFOCNHBVVNOBSBHCB
-
-HN -> S
-FK -> N
-CH -> P
-VP -> P
-VV -> C
-PB -> H
-CP -> F
-KO -> P
-KN -> V
-NO -> K
-NF -> N
-CO -> P
-HO -> H
-VH -> V
-OV -> C
-VS -> F
-PK -> H
-OS -> S
-BF -> S
-SN -> P
-NK -> N
-SV -> O
-KB -> O
-ON -> O
-FN -> H
-FO -> N
-KV -> S
-CS -> C
-VO -> O
-SP -> O
-VK -> H
-KP -> S
-SK -> N
-NC -> B
-PN -> N
-HV -> O
-HS -> C
-CN -> N
-OO -> V
-FF -> B
-VC -> V
-HK -> K
-CC -> H
-BO -> H
-SC -> O
-HH -> C
-BV -> P
-OB -> O
-FC -> H
-PO -> C
-FV -> C
-BK -> F
-HB -> B
-NH -> P
-KF -> N
-BP -> H
-KK -> O
-OH -> K
-CB -> H
-CK -> C
-OK -> H
-NN -> F
-VF -> N
-SO -> K
-OP -> F
-NP -> B
-FS -> S
-SH -> O
-FP -> O
-SF -> V
-HF -> N
-KC -> K
-SB -> V
-FH -> N
-SS -> C
-BB -> C
-NV -> K
-OC -> S
-CV -> N
-HC -> P
-BC -> N
-OF -> K
-BH -> N
-NS -> K
-BN -> F
-PC -> C
-CF -> N
-HP -> F
-BS -> O
-PF -> S
-PV -> B
-KH -> K
-VN -> V
-NB -> N
-PH -> V
-KS -> B
-PP -> V
-PS -> C
-VB -> N
-FB -> N