#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  map<int, int> strmap;
  while (~scanf("%d", &n)) {
    int a;
    int ans = 0;
    for (int i = 1; i <= n; i++) {
      cin >> a;
      strmap[a]++;
      if (ans < strmap[a]) ans = strmap[a];
    }
    cout << ans << endl;
  }
  return 0;
}
