import sys
import heapq, math, itertools
from collections import defaultdict, deque
from bisect import bisect_left, bisect_right, insort_left, insort_right
inputs = sys.stdin.readline
mod = 10**9+7
inf = float('inf')
#sys.setrecursionlimit(10**7)

def main():
  n = int(input())
  a = list(map(int, inputs().split()))
  cnt, x = 0, []
  for aa in a:
    if aa==0:
      cnt += 1
    else:
      x.append(aa)
  if not x:
    print('Yes')
  else:
    x = sorted(x)
    y = []
    for i in range(1, len(x)):
      if x[i]-x[i-1]!=0:
        y.append(x[i]-x[i-1])
    if not y:
      print("Yes")
    else:
      d = min(y)
      flg = True
      num = 0
      for i in range(1, len(x)):
        dif = x[i]-x[i-1]
        if dif==0:
          if d!=0:
            flg = False
        elif dif%d!=0:
          flg = False
        else:
          num += max((dif//d)-1,0)
          if num>cnt:
            flg = False
      print('Yes' if flg else 'No')


if __name__ == '__main__':
  main()