retyped day2, completed days 3 and 4, modified template

template/part1.py

@@ -1,13 +1,12 @@
 from common import parse
 
 
-def solve():
+def solve(input):
     pass
 
 
 def main():
-    r = solve()
-    print(r)
+    print(solve(parse("input")))
 
 
 if __name__ == "__main__":