#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m;
  cin >> n;
  map<int, int> cnt;
  int ans = 0;
  for (int i = 1; i <= n; i++) {
    cin >> m;
    cnt[m]++;
    ans = max(ans, cnt[m]);
  }
  cout << ans << "\n";
}
