#include <bits/stdc++.h>
using namespace std;
int main() {
  int a[1000], n, v[1000] = {0};
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    v[a[i]]++;
  }
  int ans = -1;
  for (int i = 0; i < 105; i++) {
    if (v[i] > ans) ans = v[i];
  }
  cout << ans << endl;
  return 0;
}
