#include <bits/stdc++.h>
using namespace std;
int main() {
  int values[101] = {};
  int T;
  cin >> T;
  int value;
  while (T--) {
    cin >> value;
    values[value]++;
  }
  int max = 0;
  for (int i = 1; i < 101; i++) {
    if (values[i] > max) max = values[i];
  }
  cout << max;
  return 0;
}
