#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, cnt = 1, maxi = 1;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
    for (int t = 0; t < i; ++t) {
      if (a[t] == a[i]) {
        ++cnt;
      }
    }
    maxi = max(maxi, cnt);
    cnt = 1;
  }
  cout << maxi;
}
