#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  map<int, int> mp;
  int x;
  while (n--) {
    cin >> x;
    mp[x]++;
  }
  int mx = INT_MIN;
  for (auto it = mp.begin(); it != mp.end(); it++) {
    mx = max(mx, it->second);
  }
  cout << mx << '\n';
  return 0;
}
