#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, a[101] = {0}, s = 0;
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> m;
    a[m]++;
    s = max(a[m], s);
  }
  cout << s;
}
