#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, temp, g = 0;
  cin >> n;
  int a[101];
  for (int i = 1; i <= 100; i++) a[i] = 0;
  for (int i = 0; i < n; i++) {
    cin >> temp;
    a[temp]++;
    g = max(g, a[temp]);
  }
  cout << g;
}
