diff --git a/2022/04/01.py b/2022/04/01.py
index 5402593..41713fa 100755
--- a/2022/04/01.py
+++ b/2022/04/01.py
@@ -9,10 +9,9 @@ def main():
         e1, e2 = line.split(',')
         e1_from, e1_to = map(int, e1.split('-'))
         e2_from, e2_to = map(int, e2.split('-'))
-        #r1 = range(int(e1_from), int(e1_to) +1)
-        #r2 = range(int(e2_from), int(e2_to) +1)
-        if (e1_from <= e2_from and e1_to >= e2_to ) or \
-        ( e2_from <= e1_from and e2_to >= e1_to ):
+        r1 = list(range(e1_from, e1_to +1))
+        r2 = list(range(e2_from, e2_to +1))
+        if set(r1).issubset(r2) or set(r2).issubset(r1):
             includes += 1
     print(includes)