#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, var;
  cin >> n;
  unordered_map<int, int> umap;
  int freq = -1, val;
  for (int i = 0; i < n; i++) {
    cin >> var;
    val = ++umap[var];
    if (val > freq) freq = val;
  }
  cout << freq << endl;
  return 0;
}
