#include <bits/stdc++.h>
using namespace std;
map<int, int> box;
int main() {
  int n, ans;
  while (cin >> n) {
    ans = 0;
    box.clear();
    for (int i = 0; i < n; i++) {
      int a;
      cin >> a;
      box[a]++;
      ans = max(box[a], ans);
    }
    cout << ans << endl;
  }
  return 0;
}
