Solve day3

day3/part1.py

@@ -0,0 +1,13 @@
+FILE = "input.txt"
+
+def main():
+    return sum(max_for_line(line.strip()) for line in open(FILE))
+
+def max_for_line(line: str) -> int:
+    tens = max(int(n) for n in line[:-1])
+    idx = line.index(str(tens))
+    ones = max(int(n) for n in line[idx+1:])
+    return tens * 10 + ones
+
+if __name__ == "__main__":
+    print(main())