import java.util.*;
public class Evaluation{
	public static void main(String... args){
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int[] number = new int[n];
		for(int i = 0; i < n; i++){
			number[i] = scan.nextInt();
		}
		Arrays.sort(number);
		System.out.println(MostOften(n,number));
	}
	public static int MostOften(int n,int[] number){
		int[] data = new int[n];
		int count=0;
		int now=0;
		for(int i = 0; i < n-1;i++){
			if(number[i] == number[i+1]){
				count++;
			}else{
				data[now]=count;
				now++;
				count=0;
			}
		}
		Arrays.sort(data);
		int max = 0;
		for(int j = 0; j < n; j++){
			if(max < data[j])max = data[j];
		}
		return max;
	}
}