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