#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[101];
  memset(a, 0, sizeof(a));
  for (int i = 0; i < n; i++) {
    int b;
    cin >> b;
    a[b] += 1;
  }
  sort(a, a + 101);
  cout << a[100] << endl;
  return 0;
}
