import sys
from sys import stdin
import math

N = int(input())

A = list(map(int,input().split()))
A.sort()

d = None
z = 0
B = []

for i in range(N-1):

    if A[i] != 0:
        diff = A[i+1] - A[i]
        if d == None:
            d = diff
        else:
            d = math.gcd(d,diff)

    else:
        z += 1

for i in range(N):
    if A[i] != 0:
        B.append(A[i])

if len(B) == 0:
    print ("Yes")
    sys.exit()

if d == 0:
    if max(B) == min(B):
        print ("Yes")
    else:
        print ("No")
    sys.exit()

ind = 0
for i in range(B[0],B[-1]+1,d):

    if B[ind] == i:
        ind += 1
    else:
        z -= 1

    if z < 0:
        print ("No")
        sys.exit()

if ind == len(B):
    print ("Yes")
else:
    print ("No")