#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int *x = new int[n];
  for (int i = 0; i < n; i++) {
    cin >> x[i];
  }
  sort(x, x + n);
  int val = x[0];
  int ct = 0;
  int max = -1e9;
  for (int i = 0; i < n; i++) {
    if (x[i] == val) {
      ct++;
    } else {
      if (ct > max) {
        max = ct;
      }
      val = x[i];
      ct = 1;
    }
  }
  if (ct > max) {
    max = ct;
  }
  cout << max << endl;
  return 0;
}
