Solve 2016 days 4 and 5.

2016/d5.py

@@ -0,0 +1,30 @@
+from lib import *
+import hashlib
+
+second = True
+data = open(0).read().strip()
+
+if second:
+    p = [" " for _ in range(8)]
+    for i in range(10**12):
+        s = data + str(i)
+        h = hashlib.md5(s.encode()).hexdigest()
+        if h.startswith("0" * 5) and h[5] in "01234567":
+            index = int(h[5])
+            if p[index] == " ":
+                p[index] = h[6]
+                # print("\r" + "".join(p))
+        if not " " in p:
+            p = "".join(p)
+            break
+else:
+    p = ""
+    for i in range(10**12):
+        s = data + str(i)
+        h = hashlib.md5(s.encode()).hexdigest()
+        if h.startswith("0" * 5):
+            p += h[5]
+        if len(p) == 8:
+            break
+
+print(p)