Support more than two digits of each unit

src/countdown/__main__.py

@@ -17,11 +17,11 @@
     r"""
     ^
     (?:                 # Optional minutes
-        ( \d{1,2} )     # D or DD
+        ( \d+ )         # one or more digits
         m               # "m"
     )?
     (?:                 # Optional seconds
-        ( \d{1,2} )     # D or DD
+        ( \d+ )         # one or more digits
         s               # "s"
     )?
     $

tests/test_main.py

@@ -63,6 +63,10 @@ def test_duration_10_minutes():
     assert __main__.duration("10m") == 600
 
 
+def test_duration_150_minutes():
+    assert __main__.duration("150m") == 9000
+
+
 def test_duration_25_minutes():
     assert __main__.duration("25m") == 1500
 
@@ -120,6 +124,21 @@ def test_get_number_lines_45_minutes():
     )
 
 
+def test_get_number_lines_101_minutes():
+    assert join_lines(__main__.get_number_lines(6060)) == indent(
+        dedent(
+            """
+        ██  ██████    ██     ██████ ██████
+       ███  ██  ██   ███  ██ ██  ██ ██  ██
+        ██  ██  ██    ██     ██  ██ ██  ██
+        ██  ██  ██    ██  ██ ██  ██ ██  ██
+        ██  ██████    ██     ██████ ██████
+    """
+        ).strip("\n"),
+        "  ",
+    )
+
+
 def test_get_number_lines_17_minutes_and_four_seconds():
     assert join_lines(__main__.get_number_lines(1024)) == indent(
         dedent(