#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int cnt[200] = {0};
  int arr[n];
  set<int> s;
  for (int i = 0; i < n; i++) {
    cin >> arr[i];
    cnt[arr[i]]++;
    s.insert(arr[i]);
  }
  int flag = 1;
  int ans = 0;
  while (flag == 1) {
    flag = 0;
    for (auto p : s) {
      if (cnt[p] > 0) {
        flag = 1;
        cnt[p]--;
      }
    }
    if (flag == 1) ans++;
  }
  cout << ans << endl;
}
