def subset(ar, n): 
    res = 0
    ar.sort() 
    for i in range(0, n) : 
        count = 1
        for i in range(n - 1): 
            if ar[i] == ar[i + 1]: 
                count+=1
            else: 
                break 
        res = max(res, count)  
    return res 