#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, mx = 0, i, x;
  cin >> n;
  int mp[110] = {};
  for (i = 0; i < n; i++) {
    cin >> x;
    mp[x]++;
    if (mp[x] > mx) mx = mp[x];
  }
  cout << mx << endl;
  return 0;
}
