#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, x[101] = {0}, i, a, m = 0;
  cin >> n;
  for (i = 0; i < n; i++) {
    cin >> a;
    x[a]++;
  }
  for (i = 0; i <= 100; i++) {
    if (x[i] > m) m = x[i];
  }
  cout << m;
}
