01, 02

.gitignore

@@ -1,3 +1,6 @@
+input
+test
+
 /_build
 /cover
 /deps

01/01.py

@@ -0,0 +1,45 @@
+from itertools import groupby
+
+data = open("input").read().strip().split("\n")
+data = [(a[0], int(a[1:])) for a in data]
+
+fs = {"R": lambda x, y: x + y, "L": lambda x, y: x - y}
+
+
+def part1(data):
+    s = 50
+    c = 0
+    for a, b in data:
+        f = fs[a]
+        while not 0 <= f(s, b) <= 99:
+            b -= 100
+        s = f(s, b)
+        if s == 0:
+            c += 1
+    return c
+
+
+def part2(data):
+    s = 50
+    c = 0
+    for a, b in groupby(data, key=lambda x: x[0]):
+        x = sum(y[1] for y in b)
+        f = fs[a]
+        while not 0 <= x <= 99:
+            x -= 100
+            c += 1
+        while x > 0:
+            s = f(s, 1)
+            if s == 0:
+                c += 1
+            elif s == -1:
+                s = 99
+            elif s == 100:
+                s = 0
+                c += 1
+            x -= 1
+    return c
+
+
+print(part1(data))
+print(part2(data))

02/02.py

@@ -0,0 +1,44 @@
+F = "input"
+
+data = open(F).read().strip().split(",")
+data = [(int(y[0]), int(y[1])) for x in data if (y := x.split("-"))]
+
+data = sorted(data)
+m = max(data, key=lambda x: x[1])[1]
+
+
+def part1(data):
+    c = 0
+    for i in range(1, int("9" * (len(str(m)) // 2)) + 1):
+        x = int(str(i) * 2)
+        for a, b in data:
+            if x in range(a, b + 1):
+                c += x
+    return c
+
+
+def part2(data):
+    nums = []
+    for i in range(2, len(str(m)) + 1):
+        j = 1
+        n = int(str(j) * i)
+        while n <= m:
+            nums.append(n)
+            j += 1
+            n = int(str(j) * i)
+    nums = sorted(nums)
+    i = 0
+    c = set()
+    for n in nums:
+        while n > data[i][1]:
+            i += 1
+        j = i
+        while j < len(data) and n <= data[j][1]:
+            if data[j][0] <= n <= data[j][1]:
+                c.add(n)
+            j += 1
+    return sum(c)
+
+
+print(part1(data))
+print(part2(data))