import bisect


class BIT:
    def __init__(self, n, func=int.__add__, one=0):
        self.n = n
        self.func = func
        self.one = one
        self.a = [0] * (self.n + 1)

        self.all_sum = 0

    def update(self, i, x):
        i += 1
        while i <= self.n:
            self.a[i] = self.func(self.a[i], x)
            i += i & (-i)

        self.all_sum += x

    def get(self, i):
        s = self.one
        while i != 0:
            s = self.func(s, self.a[i])
            i -= i & (-i)
        return s

    def out_get(self, i):
        return self.all_sum - self.get(i)


n = int(input())
y_list = list()
point = list()

for _ in range(n):
    x, y = map(int, input().split())
    y_list.append(y)
    point.append((x, y))

y_list.sort()
point.sort()


def compress_index(y):
    idx = bisect.bisect_left(y_list, y)
    return idx


mod = 998244353

one_bit = BIT(n)
x_plus_y_bit = BIT(n)
x_plus_y2_bit = BIT(n)
x_minus_y_bit = BIT(n)
x_minus_y2_bit = BIT(n)

ans = 0

for x, y in point:
    y_idx = compress_index(y)

    one = one_bit.get(y_idx)
    x_plus_y = x_plus_y_bit.get(y_idx)
    x_plus_y2 = x_plus_y2_bit.get(y_idx)

    ans += (x + y) ** 2 * one - 2 * (x + y) * x_plus_y + x_plus_y2
    ans %= mod

    one = one_bit.out_get(y_idx)
    x_minus_y = x_minus_y_bit.out_get(y_idx)
    x_minus_y2 = x_minus_y2_bit.out_get(y_idx)

    ans += (x - y) ** 2 * one - 2 * (x - y) * x_minus_y + x_minus_y2
    ans %= mod

    one_bit.update(y_idx, 1)
    x_plus_y_bit.update(y_idx, (x + y) % mod)
    x_plus_y2_bit.update(y_idx, (x + y) ** 2 % mod)
    x_minus_y_bit.update(y_idx, (x - y) % mod)
    x_minus_y2_bit.update(y_idx, (x - y) ** 2 % mod)

print(ans % mod)