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