#include <bits/stdc++.h>
using namespace std;
int main() {
  unordered_map<int, int> nums;
  int n;
  cin >> n;
  while (n--) {
    int dummy;
    cin >> dummy;
    nums[dummy]++;
  }
  int res = 0;
  for (auto p : nums) res = max(res, p.second);
  cout << res << endl;
}
