# 第一题AC # coding: utf-8 from collections import Counter n = int(input()) c = Counter(list(map(int, input().split()))) c_t = c.most_common(len(c)) least = c_t[-1] d = dict(c_t) if least[1] < 2: print(0) exit() while d[least[0]] >= 2: least_num = d[least[0]] ret = 0 flag = True for i in d.keys(): if d[i] % least_num == 0: ret += d[i] // least_num else: flag = False d[least[0]] = d[least[0]] - 1 break if flag: print(ret) exit() print(0)