Yaroslav has an array that consists of *n* integers. In one second Yaroslav can swap two neighboring array elements. Now Yaroslav is wondering if he can obtain an array where any two neighboring elements would be distinct in a finite time.

Help Yaroslav.
The first line contains integer *n* (1 ≤ *n* ≤ 100) — the number of elements in the array. The second line contains *n* integers *a*<sub class="lower-index">1</sub>, *a*<sub class="lower-index">2</sub>, ..., *a*<sub class="lower-index">*n*</sub> (1 ≤ *a*<sub class="lower-index">*i*</sub> ≤ 1000) — the array elements.
import statistics
from statistics import mode
n = int(input())
a = list(map(int, input().split()))
a = a.count(mode(a))
if a == 1:
    print("YES")
elif n % 2 == 0:
    if a <= n // 2:
        print("YES")
    else:
        print("NO")
else:
    if a <= n // 2 + 1:
        print("YES")
    else:
        print("NO")