#include <bits/stdc++.h>
int main() {
  int n, m, max = 0;
  int a[101] = {0};
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
    scanf("%d", &m);
    a[m]++;
    if (a[m] > max) max = a[m];
  }
  printf("%d", max);
  return 0;
}
