1 files changed, 44 insertions, 0 deletions
diff --git a/20/py/d06.py b/20/py/d06.py
new file mode 100644
index 0000000..8604b00
--- /dev/null
+++ b/20/py/d06.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+import sys
+
+
+def pt1(_in):
+    res = 0
+    questions = {s for s in "abcdefghijklmnopqrstuvwxyz"}
+    for line in _in:
+        if line == "\n":
+            res += 26 - len(questions)
+            questions = {s for s in "abcdefghijklmnopqrstuvwxyz"}
+            continue
+        for ans in line:
+            if ans in questions:
+                questions.remove(ans)
+    res += 26 - len(questions)
+    return res
+
+
+def pt2(_in):
+    res = 0
+    questions = {s for s in "abcdefghijklmnopqrstuvwxyz"}
+    for line in _in:
+        person = set()
+        if line == "\n":
+            res += len(questions)
+            questions = {s for s in "abcdefghijklmnopqrstuvwxyz"}
+            continue
+        for ans in line:
+            person.add(ans)
+        for q in questions.copy():
+            if q not in person:
+                questions.remove(q)
+    res += len(questions)
+    return res
+
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        input = open(sys.argv[1], "r").readlines()
+    else:
+        input = open("../input/06", "r").readlines()
+    print(pt1(input))
+    print(pt2(input))