#include <bits/stdc++.h>
using namespace std;
map<int, int> mp;
int n;
int main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cin >> n;
  int tmp, ans = -1;
  while (n--) {
    cin >> tmp;
    mp[tmp]++;
  }
  for (auto i : mp) ans = max(ans, i.second);
  cout << ans << '\n';
  return 0;
}
