description: Polycarp likes squares and cubes of positive integers. Here is the beginning of the sequence of numbers he likes: 1, 4, 8, 9, ....
  
  For a given number n, count the number of integers from 1 to n that Polycarp likes. In other words, find the number of such x that x is a square of a positive integer number or a cube of a positive integer number (or both a square and a cube simultaneously).
  
  Input
  
  The first line contains an integer t (1 ≤ t ≤ 20) — the number of test cases.
  
  Then t lines contain the test cases, one per line. Each of the lines contains one integer n (1 ≤ n ≤ 10^9).
  
  Output
  
  For each test case, print the answer you are looking for — the number of integers from 1 to n that Polycarp likes.
  
  Example
  
  Input
  
  
  6
  10
  1
  25
  1000000000
  999999999
  500000000
  
  
  Output
  
  
  4
  1
  6
  32591
  32590
  23125
solution: import java.util.*;
  import java.io.*;
  
  public class CP {
      public static void main(String[] args) throws IOException{
          FastReader sc = new FastReader();
          int t = sc.Int();
          for(;t > 0;t--){
              int n = sc.Int();
              Set<Integer> data  = new HashSet<>();
              int ans = 0;
              for(int i = 1;i * i * i <= n;i++){
                  data.add(i * i * i);
              }
              for(int i = 1;i * i <= n;i++){
                  data.add(i * i);
              }
              System.out.println(data.size());
          }
          sc.close();
      }
  }
  
  class FastReader {
      private BufferedReader br;
      private StringTokenizer st;
  
      public FastReader() {
          br = new BufferedReader(new InputStreamReader(System.in));
      }
  
      public String next() throws IOException {
          for (; st == null || !st.hasMoreTokens();) {
              st = new StringTokenizer(br.readLine());
          }
          return st.nextToken();
      }
  
      public String nextLine() throws IOException {
          return br.readLine();
      }
  
      public int Int() throws IOException {
          return Integer.parseInt(next());
      }
  
      public long Long() throws IOException {
          return Long.parseLong(next());
      }
  
      public double Double() throws IOException {
          return Double.parseDouble(next());
      }
  
      public float Float() throws IOException {
          return Float.parseFloat(next());
      }
  
      public char Char() throws IOException {
          return next().charAt(0);
      }
  
      public void close() throws IOException {
          br.close();
      }
  }