There are only 12 advent days this year

01/example.txt

@@ -0,0 +1,10 @@
+L68
+L30
+R48
+L5
+R60
+L55
+L1
+L99
+R14
+L82

01/poop.sh

@@ -1,12 +1,35 @@
 #!/bin/env bash
-set -euo pipefail
+set -Eeuo pipefail
 
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
+trap 'echo "SHIEEEET at line ${LINENO}" >&2' ERR
 
 # Advent of Code day 01
 
 main() {
-    :
+  dial=50
+  count=0
+
+  while read -r line; do
+      dir="${line:0:1}"
+      num="${line:1}"
+
+      # apply rotation
+      if [[ "$dir" == L ]]; then
+          dial=$(( dial - num ))
+      else
+          dial=$(( dial + num ))
+      fi
+
+      # wrap into 0–99
+      dial=$(( (dial % 100 + 100) % 100 ))
+
+      # count zero hits
+      if (( dial == 0 )); then
+          ((count++))
+      fi
+  done < example.txt
+
+  printf "%d\n" "$count"
 }
 
 main "$@"

13/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 13
-
-main() {
-    :
-}
-
-main "$@"

14/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 14
-
-main() {
-    :
-}
-
-main "$@"

15/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 15
-
-main() {
-    :
-}
-
-main "$@"

16/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 16
-
-main() {
-    :
-}
-
-main "$@"

17/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 17
-
-main() {
-    :
-}
-
-main "$@"

18/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 18
-
-main() {
-    :
-}
-
-main "$@"

19/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 19
-
-main() {
-    :
-}
-
-main "$@"

20/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 20
-
-main() {
-    :
-}
-
-main "$@"

21/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 21
-
-main() {
-    :
-}
-
-main "$@"

22/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 22
-
-main() {
-    :
-}
-
-main "$@"

23/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 23
-
-main() {
-    :
-}
-
-main "$@"

24/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 24
-
-main() {
-    :
-}
-
-main "$@"

25/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 25
-
-main() {
-    :
-}
-
-main "$@"

26/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 26
-
-main() {
-    :
-}
-
-main "$@"

27/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 27
-
-main() {
-    :
-}
-
-main "$@"

28/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 28
-
-main() {
-    :
-}
-
-main "$@"

29/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 29
-
-main() {
-    :
-}
-
-main "$@"

30/poop.sh

@@ -1,12 +0,0 @@
-#!/bin/env bash
-set -euo pipefail
-
-trap 'echo "SHIEEEET at line $LINENO" >&2' ERR
-
-# Advent of Code day 30
-
-main() {
-    :
-}
-
-main "$@"