N = int(input())
A = list(map(int, input().split()))
L = []
zero = 0
for a in A:
    if a == 0:
        zero += 1
    else:
        L.append(a)
        
L.sort()
if len(set(L)) <= 1:
    print("Yes")
    exit()
D = []
for i in range(len(L) - 1):
    D.append(L[i + 1] - L[i])
minv = min(D)
if minv == 0:
    print("No")
    exit()
    
cnt = 0
for d in D:
    cnt += d - 1
if cnt <= zero:
    print("Yes")
    exit()


cnt = 0
for d in D:
    if d % minv != 0:
        print("No")
        exit()
    cnt += d // minv - 1
    
if cnt <= zero:
    print("Yes")
else:
    print("No")