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