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