#include <bits/stdc++.h>
using namespace std;
void ram5564() {
  map<int, int> m;
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
    m[a[i]]++;
  }
  int Max = -1;
  for (int i = 0; i < n; ++i) {
    Max = max(Max, m[a[i]]);
  }
  cout << Max << endl;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int t = 1;
  while (t--) ram5564();
  return 0;
}
