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