#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, mx = 0;
  cin >> n;
  int a[n];
  int b[100] = {0};
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    b[a[i] - 1]++;
  }
  for (int i = 0; i < 100; i++) {
    if (mx < b[i]) mx = b[i];
  }
  cout << mx << endl;
  return 0;
}
