#include <bits/stdc++.h>
using namespace std;
const long long M = 1e9 + 7;
const int N = 1e6 + 7;
int main() {
  map<long long, long long> m;
  long long n, a = 0;
  cin >> n;
  while (n--) {
    long long x;
    cin >> x;
    m[x]++;
  }
  for (auto y : m) {
    if (a <= y.second) a = y.second;
  }
  cout << a;
  return 0;
}
