#include <bits/stdc++.h>
using namespace std;
int v[101];
int main() {
  int n, max = 0, max2 = 0, x;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    cin >> x;
    v[x]++;
    if (max2 < x) max2 = x;
  }
  for (int i = 1; i <= max2; i++)
    if (max < v[i]) max = v[i];
  cout << max;
  return 0;
}
