#include <bits/stdc++.h>
int a[101];
int main(int argc, char* argv[]) {
  int n, comp = -1;
  scanf("%d", &n);
  for (int i = 0, tmp; i < n; ++i) {
    scanf("%d", &tmp);
    ++a[tmp];
    if (comp < a[tmp]) comp = a[tmp];
  }
  printf("%d", comp);
  return 0;
}
