2015/5

y2015/p02.py

@@ -0,0 +1,11 @@
+import sys
+
+
+ans1 = 0
+ans2 = 0
+for line in sys.stdin.readlines():
+    a, b, c = sorted(map(int, line.split('x')))
+    ans1 += 2 * (a * b + b * c + a * c) + a * b
+    ans2 += a * b * c + 2 * (a + b)
+print(ans1)
+print(ans2)

y2015/p03.py

@@ -0,0 +1,12 @@
+import sys
+from itertools import accumulate as acc
+
+
+text = sys.stdin.read()
+dirs = dict(zip('<>^v', [-1, 1, -1j, 1j]))
+
+ans1 = len({*acc(map(dirs.get, text))})
+print(ans1)
+
+ans2 = len({*acc(map(dirs.get, text[::2])), *acc(map(dirs.get, text[1::2]))})
+print(ans2)

y2015/p04.py

@@ -0,0 +1,23 @@
+import sys
+from hashlib import md5
+from multiprocessing import Pool
+
+
+def mine(code, i):
+    hasher = md5()
+    hasher.update(f'{code}{i}'.encode())
+    return i, hasher.hexdigest()
+
+
+if __name__ == '__main__':
+    code = sys.stdin.read().strip()
+    ans1 = None
+    ans2 = None
+    with Pool() as pool:
+        for i, coin in pool.starmap(mine, [(code, i) for i in range(10**7)]):
+            if ans1 is None and coin.startswith('00000'):
+                ans1 = i
+            if ans2 is None and coin.startswith('000000'):
+                ans2 = i
+    print(ans1)
+    print(ans2)

y2015/p05.py

@@ -0,0 +1,22 @@
+import re
+import sys
+
+
+def checks1(string):
+    yield len(re.findall(r'([aeiou])', string)) >= 3
+    yield len(re.findall(r'(.)\1', string))
+    yield len(re.findall(r'(ab|cd|pq|xy)', string)) == 0
+
+
+def checks2(string):
+    yield len(re.findall(r'(.)(.).*\1\2', string)) >= 1
+    yield len(re.findall(r'(.).\1', string)) >= 1
+
+
+ans1 = 0
+ans2 = 0
+for line in sys.stdin.read().splitlines():
+    ans1 += all(checks1(line))
+    ans2 += all(checks2(line))
+print(ans1)
+print(ans2)