#include <bits/stdc++.h>
using namespace std;
const int MAXN = 105;
int mx[MAXN], n, ans;
int main() {
  cin >> n;
  for (int i = 0; i < n; i++) {
    int tmp;
    cin >> tmp;
    mx[tmp]++;
  }
  for (int i = 0; i < MAXN; i++) ans = max(ans, mx[i]);
  cout << ans;
}
