commit

2026-05-02 15:42:52 +10:00
commit 8582780ac9
38 changed files with 460 additions and 0 deletions
@@ -0,0 +1,5 @@
+n = int(input())
+input()  # ignore the numbers
+
+ans = 2 ** (n - 1) - 2
+print(max(ans, 0) % 998244353)