N = int(input())
A = list(map(int, input().split()))
num = A.count(0)

s = set(A)

A.sort(reverse = True)
d = 10**16

for i in range(N-1):
    if A[i+1] == 0:
        break
    tmp = A[i] - A[i+1]
    d = min(tmp, d)

if num >= N-1:
    ans = "Yes"
elif d == 0:
    if (0 in s and len(s) == 2) or len(s) == 1:
        ans = "Yes"
    else:
        ans = "No"
else:
    ans = "Yes"
    for i in range(N-1):
        if A[i+1] == 0:
            break
        diff = A[i] - A[i+1]
        if diff == d:
            continue
        if diff%d != 0:
            ans = "No"
        elif diff%d == 0:
            num -= diff//d - 1
            if num < 0:
                ans = "No"
    
print(ans)