import sys
input = sys.stdin.readline

mod = 998244353
N = int(input())
A = list(map(int, input().split()))
x = A[-1]
j = N-1
ans = 1
for i in range(N-1)[::-1]:
    if A[i] <= x:
        ans = ans * (j - i + 1) % mod
        x = A[i]
        j = i
print(ans)