@@ -0,0 +1,9 @@
+y, m = map(int, input().strip().split())
+if m in [1, 3, 5, 7, 8, 10, 12]:
+ print(31)
+elif m in [4, 6, 9, 11]:
+ print(30)
+elif y % 4 == 0 and y % 100 != 0 or y % 400 == 0:
+ print(29)
+else:
+ print(28)
