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 sq{
  
  	public static void main(String[] args) throws Exception{
  		int t = sc.nextInt();
  		while(t-- > 0){
  			int n = sc.nextInt();
  			HashSet<Integer> hs = new HashSet<>();
  			hs.add(1);
  			int num=2;
  			int square=0;
  			int cube=0;
  			while(square <= n){
  				square = num*num;
  				num++;
  				if(square <=n)
  					hs.add(square);
  			}
  
  			num=2;
  			while(cube <= n){
  				cube = num*num*num;
  				num++;
  				if(cube <=n)
  					hs.add(cube);
  			}
  
  			pw.println(hs.size());
  
  			
  		}
  
  		pw.flush();
  	}
  
  
  
  
  
  	static class Scanner {
  		StringTokenizer st;
  		BufferedReader br;
   
  		public Scanner(InputStream s) {
  			br = new BufferedReader(new InputStreamReader(s));
  		}
   
  		public Scanner(FileReader r) {
  			br = new BufferedReader(r);
  		}
   
  		public String next() throws IOException {
  			while (st == null || !st.hasMoreTokens())
  				st = new StringTokenizer(br.readLine());
  			return st.nextToken();
  		}
   
  		public int nextInt() throws IOException {
  			return Integer.parseInt(next());
  		}
   
  		public long nextLong() throws IOException {
  			return Long.parseLong(next());
  		}
   
  		public String nextLine() throws IOException {
  			return br.readLine();
  		}
   
  		public double nextDouble() throws IOException {
  			String x = next();
  			StringBuilder sb = new StringBuilder("0");
  			double res = 0, f = 1;
  			boolean dec = false, neg = false;
  			int start = 0;
  			if (x.charAt(0) == '-') {
  				neg = true;
  				start++;
  			}
  			for (int i = start; i < x.length(); i++)
  				if (x.charAt(i) == '.') {
  					res = Long.parseLong(sb.toString());
  					sb = new StringBuilder("0");
  					dec = true;
  				} else {
  					sb.append(x.charAt(i));
  					if (dec)
  						f *= 10;
  				}
  			res += Long.parseLong(sb.toString()) / f;
  			return res * (neg ? -1 : 1);
  		}
   
  		public long[] nextlongArray(int n) throws IOException {
  			long[] a = new long[n];
  			for (int i = 0; i < n; i++)
  				a[i] = nextLong();
  			return a;
  		}
   
  		public Long[] nextLongArray(int n) throws IOException {
  			Long[] a = new Long[n];
  			for (int i = 0; i < n; i++)
  				a[i] = nextLong();
  			return a;
  		}
   
  		public int[] nextIntArray(int n) throws IOException {
  			int[] a = new int[n];
  			for (int i = 0; i < n; i++)
  				a[i] = nextInt();
  			return a;
  		}
   
  		public Integer[] nextIntegerArray(int n) throws IOException {
  			Integer[] a = new Integer[n];
  			for (int i = 0; i < n; i++)
  				a[i] = nextInt();
  			return a;
  		}
   
  		public boolean ready() throws IOException {
  			return br.ready();
  		}
   
  	}
   
  	static class pair implements Comparable<pair> {
  		long x;
  		long y;
   
  		public pair(long x, long y) {
  			this.x = x;
  			this.y = y;
  		}
   
  		public String toString() {
  			return x + " " + y;
  		}
   
  		public boolean equals(Object o) {
  			if (o instanceof pair) {
  				pair p = (pair) o;
  				return p.x == x && p.y == y;
  			}
  			return false;
  		}
   
  		public int hashCode() {
  			return new Long(x).hashCode() * 31 + new Long(y).hashCode();
  		}
   
  		public int compareTo(pair other) {
  			if (this.x == other.x) {
  				return Long.compare(this.y, other.y);
  			}
  			return Long.compare(this.x, other.x);
  		}
  	}
   
  	static class tuble implements Comparable<tuble> {
  		int x;
  		int y;
  		int z;
   
  		public tuble(int x, int y, int z) {
  			this.x = x;
  			this.y = y;
  			this.z = z;
  		}
   
  		public String toString() {
  			return x + " " + y + " " + z;
  		}
   
  		public int compareTo(tuble other) {
  			if (this.x == other.x) {
  				if (this.y == other.y) {
  					return this.z - other.z;
  				}
  				return this.y - other.y;
  			} else {
  				return this.x - other.x;
  			}
  		}
  	}
   
  	static long mod = 1000000007;
  	static Random rn = new Random();
  	static Scanner sc = new Scanner(System.in);
  	static PrintWriter pw = new PrintWriter(System.out);
  
  
  }