#!/bin/python3

import sys


n = int(input().strip())
heights = [int(height_temp) for height_temp in input().strip().split(' ')]

num_of_heights = {}

for height in heights:
    try:
        num_of_heights[height]
    except KeyError:
        num_of_heights[height] = 0
        
    num_of_heights[height] += 1
    
max = 0
for key in num_of_heights.keys():
    if num_of_heights[key] > max:
        max = num_of_heights[key]
        
print(max)