#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  map<int, int> frq;
  int ans = 0;
  for (int i = 0; i < n; ++i) {
    int x;
    cin >> x;
    frq[x] += 1;
    ans = max(ans, frq[x]);
  }
  cout << ans << endl;
  return 0;
}
