#include <bits/stdc++.h>
using namespace std;
vector<int> v;
int main() {
  int n;
  scanf("%d", &n);
  v.resize(n);
  map<int, int> mp;
  for (int i = 0; i < n; i++) {
    scanf("%d", &v[i]);
    ++mp[v[i]];
  }
  int ans = 0;
  for (map<int, int>::iterator it = mp.begin(); it != mp.end(); it++) {
    ans = max(it->second, ans);
  }
  printf("%d\n", ans);
  return 0;
}
