"""

ある数が代表になるためには

・それより右に小さい数が無い

が必須

"""

import sys
from sys import stdin

N = int(stdin.readline())

A = list(map(int,stdin.readline().split()))

stk = []

for i in range(N):

    tup = (A[i],i)

    while stk and stk[-1][0] > A[i]:
        stk.pop()

    stk.append(tup)

mod = 998244353
ans = 1

#print (stk)
for i in range(len(stk)-1):

    _,l = stk[i]
    _,r = stk[i+1]

    ans *= r-l+1
    ans %= mod

print (ans % mod)