#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int arr[n];
  for (int i = 0; i < n; i++) cin >> arr[i];
  sort(arr, arr + n);
  int p(0);
  int pre(0);
  int max(0);
  for (int i = 0; i < n; i++) {
    if (arr[i] == pre)
      p++;
    else {
      if (max < p) max = p;
      p = 0;
    }
    pre = arr[i];
  }
  if (max < p) max = p;
  cout << max + 1;
  return 0;
}
