#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, i, max;
  cin >> n;
  int A[n];
  int ctr[100] = {0};
  for (i = 0; i < n; i++) {
    cin >> A[i];
    ctr[A[i] - 1]++;
  }
  max = *max_element(ctr, ctr + 100);
  cout << max;
  return 0;
}
