#include <bits/stdc++.h>
using namespace std;
int max(map<int, int> &mp) {
  int max = 0;
  for (auto &x : mp) x.second > max ? max = x.second : max;
  return max;
}
int main() {
  int n;
  cin >> n;
  map<int, int> mp;
  for (int i = 0; i < n; i++) {
    int in;
    cin >> in;
    mp[in]++;
  }
  cout << max(mp);
}
