#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  map<int, int> coins;
  for (int i = 0, k; i < n; i++) {
    cin >> k;
    if (coins.count(k))
      coins[k]++;
    else
      coins[k] = 1;
  }
  int min = 1;
  for (auto itr = coins.begin(); itr != coins.end(); itr++)
    min = max(min, itr->second);
  cout << min;
  return 0;
}
