#include <bits/stdc++.h>
int main(void) {
  int n;
  scanf("%d", &n);
  long int a[n];
  int i, j, k = 0, b[n], m = 1;
  for (i = 0; i < n; i++) scanf("%d", &a[i]);
  for (i = 0; i < n; i++) {
    b[i] = 0;
    for (j = 0; j < n; j++)
      if (a[i] == a[j]) b[i]++;
    if (b[i] > m) m = b[i];
  }
  printf("%d", m);
  return 0;
}
