local mmi, mma = math.min, math.max
local mod = 998244353
local mfl = math.floor
local function bmul(x, y)
  local x0, y0 = x % 31596, y % 31596
  local x1, y1 = mfl(x / 31596), mfl(y / 31596)
  return (x1 * y1 * 62863 + (x1 * y0 + x0 * y1) * 31596 + x0 * y0) % mod
end

local function badd(x, y)
  return (x + y) % mod
end

local function bsub(x, y)
  return x < y and x - y + mod or x - y
end
local n = io.read("*n")
local a = {}
for i = 1, n do
  a[i] = io.read("*n")
end
local ret = 1
for i = 2, n do
  ret = bmul(ret, mmi(a[i - 1], a[i]))
end
print(ret)