### BUGGY CODE ###

import sys
def input():
	return sys.stdin.readline()[:-1]

MOD = 998244353
class Rsum():
	def __init__(self, size):
		#the number of nodes is 2n-1
		self.n = 1
		while self.n < size:
			self.n *= 2
		self.node = [0] * (2*self.n-1)

	def Access(self, x):
		return self.node[x+self.n-1]

	def Add(self, x, val):
		x += self.n-1
		self.node[x] += val
		while x > 0:
			x = (x-1)//2
			self.node[x] = self.node[2*x+1] + self.node[2*x+2]
		return

	#[l, r)
	def Get(self, l, r):
		L, R = l+self.n, r+self.n
		s = 0
		while L<R:
			if R & 1:
				R -= 1
				s += self.node[R-1]
			if L & 1:
				s += self.node[L-1]
				L += 1
			L >>= 1
			R >>= 1
		return s

n = int(input())
d = []
for i in range(n):
	x, yy = map(int, input().split())
	d.append((x, yy, i))
y = [-1 for _ in range(n)]
d.sort(key=lambda x: x[1])
for i, x in enumerate(d):
	y[x[2]] = i

d.sort()
lus = [-1 for _ in range(n)]
lds = [-1 for _ in range(n)]
rus = [-1 for _ in range(n)]
rds = [-1 for _ in range(n)]

st = Rsum(n)
for i in range(n):
	pnt = y[d[i][2]]
	lus[i] = st.Get(pnt, n)
	lds[i] = i - lus[i]
	st.Add(pnt, 1)
del st
st = Rsum(n)
for i in range(n-1, -1, -1):
	pnt = y[d[i][2]]
	rus[i] = st.Get(pnt, n)
	rds[i] = n-1-i - rus[i]
	st.Add(pnt, 1)

pws = [1]
for _ in range(n-1):
	pws.append((pws[-1] * 2) % MOD)

ans = (n * pws[n-1]) % MOD
for lu, ld, ru, rd in zip(lus, lds, rus, rds):
	ans += ((pws[lu]-1) * (pws[rd]-1))
	ans += ((pws[ld]-1) * (pws[ru]-1))
	ans += ((pws[lu]-1) * (pws[ld]-1) * (pws[ru]-1))
	ans += ((pws[lu]-1) * (pws[ld]-1) * (pws[rd]-1))
	ans += ((pws[lu]-1) * (pws[rd]-1) * (pws[ru]-1))
	ans += ((pws[ld]-1) * (pws[rd]-1) * (pws[ru]-1))
	ans += ((pws[lu]-1) * (pws[ld]-1) * (pws[ru]-1) * (pws[rd]-1))
	ans %= MOD
print(ans)

### FIXED CODE ###

import sys
def input():
	return sys.stdin.readline()[:-1]

MOD = 998244353
class Rsum():
	def __init__(self, size):
		#the number of nodes is 2n-1
		self.n = 1
		while self.n < size:
			self.n *= 2
		self.node = [0] * (2*self.n-1)

	def Access(self, x):
		return self.node[x+self.n-1]

	def Add(self, x, val):
		x += self.n-1
		self.node[x] += val
		while x > 0:
			x = (x-1)//2
			self.node[x] = self.node[2*x+1] + self.node[2*x+2]
		return

	#[l, r)
	def Get(self, l, r):
		L, R = l+self.n, r+self.n
		s = 0
		while L<R:
			if R & 1:
				R -= 1
				s += self.node[R-1]
			if L & 1:
				s += self.node[L-1]
				L += 1
			L >>= 1
			R >>= 1
		return s

n = int(input())
d = []
for i in range(n):
	x, yy = map(int, input().split())
	d.append((x, yy, i))
y = [-1 for _ in range(n)]
d.sort(key=lambda x: x[1])
for i, x in enumerate(d):
	y[x[2]] = i

d.sort()
lus = [-1 for _ in range(n)]
lds = [-1 for _ in range(n)]
rus = [-1 for _ in range(n)]
rds = [-1 for _ in range(n)]

st = Rsum(n)
for i in range(n):
	pnt = y[d[i][2]]
	g = st.Get(pnt, n)
	lus[i] = g
	lds[i] = i - g
	st.Add(pnt, 1)

st = Rsum(n)
for i in range(n-1, -1, -1):
	pnt = y[d[i][2]]
	g = st.Get(pnt, n)
	rus[i] = g
	rds[i] = n-1-i - g
	st.Add(pnt, 1)

pws = [1]
for _ in range(n-1):
	pws.append((pws[-1] * 2) % MOD)

ans = (n * pws[n-1]) % MOD
for lu, ld, ru, rd in zip(lus, lds, rus, rds):
	ans += ((pws[lu]-1) * (pws[rd]-1))
	ans += ((pws[ld]-1) * (pws[ru]-1))
	ans += ((pws[lu]-1) * (pws[ld]-1) * (pws[ru]-1))
	ans += ((pws[lu]-1) * (pws[ld]-1) * (pws[rd]-1))
	ans += ((pws[lu]-1) * (pws[rd]-1) * (pws[ru]-1))
	ans += ((pws[ld]-1) * (pws[rd]-1) * (pws[ru]-1))
	ans += ((pws[lu]-1) * (pws[ld]-1) * (pws[ru]-1) * (pws[rd]-1))
	ans %= MOD
print(ans)