#include <bits/stdc++.h>
using namespace std;
long long a, b, c, maxx, say;
long long d[10001];
int main() {
  cin >> a;
  for (int i = 1; i <= a; i++) cin >> d[i];
  sort(d + 1, d + a + 1);
  for (int i = 1; i < a; i++) {
    if (d[i] == d[i + 1])
      say++;
    else {
      if (say + 1 > maxx) maxx = say + 1;
      say = 0;
    }
  }
  if (say + 1 > maxx) maxx = say + 1;
  cout << maxx << endl;
}
