#include <bits/stdc++.h>
int main() {
  int n;
  scanf("%d", &n);
  int a[101], x, res = -1;
  memset(a, 0, sizeof(a));
  for (int i = 0; i < n; ++i) {
    scanf("%d", &x);
    a[x]++;
    res = res < a[x] ? a[x] : res;
  }
  printf("%d", res);
  return 0;
}
