#include <bits/stdc++.h>
using namespace std;
template <typename T>
void read(T &x) {
  x = 0;
  int f = 1;
  char c = getchar();
  for (; !isdigit(c); c = getchar())
    if (c == '-') f = -f;
  for (; isdigit(c); c = getchar()) x = x * 10 + c - '0';
  x *= f;
}
map<int, int> a;
int main() {
  int n, ans = 0;
  read(n);
  for (int i = 1; i <= n; i++) {
    int x;
    read(x);
    int tmp = ++a[x];
    ans = max(ans, tmp);
  }
  cout << ans << endl;
  return 0;
}
