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