#include <bits/stdc++.h>
using namespace std;
int o, k, n, x, ans, j, i;
map<int, int> mp;
int main() {
  cin >> n;
  for (i = 1; i <= n; i++) {
    cin >> x;
    mp[x]++;
    ans = max(ans, mp[x]);
  }
  cout << ans;
}
