#include <bits/stdc++.h>
using namespace std;
int main() {
  int N, MX = -1;
  map<long long int, int> mp;
  scanf("%d", &N);
  for (int i = 0; i < N; i++) {
    long long int X;
    scanf("%lld", &X);
    mp[X]++;
    if (mp[X] > MX) MX = mp[X];
  }
  printf("%d\n", MX);
}
