#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  map<int, int> mp;
  map<int, int>::iterator it;
  int mx = -1;
  int x = 0;
  for (int i = 1; i <= n; i++) {
    cin >> x;
    mp[x]++;
    if (mp[x] > mx) {
      mx = mp[x];
    }
  }
  cout << mx;
  return 0;
}
