#include <bits/stdc++.h>
int main() {
  int arr[100], freq[100];
  int size, i, j, count;
  scanf("%d", &size);
  for (i = 0; i < size; i++) {
    scanf("%d", &arr[i]);
    freq[i] = -1;
  }
  for (i = 0; i < size; i++) {
    count = 1;
    for (j = i + 1; j < size; j++) {
      if (arr[i] == arr[j]) {
        count++;
        freq[j] = 0;
      }
    }
    if (freq[i] != 0) {
      freq[i] = count;
    }
  }
  int max = -1;
  for (i = 0; i < size; i++) {
    if (freq[i] > max) {
      max = freq[i];
    }
  }
  printf("%d", max);
  return 0;
}
