description: Let's define S(x) to be the sum of digits of number x written in decimal system. For example, S(5) = 5, S(10) = 1, S(322) = 7.
  
  We will call an integer x interesting if S(x + 1) < S(x). In each test you will be given one integer n. Your task is to calculate the number of integers x such that 1 ≤ x ≤ n and x is interesting.
  
  Input
  
  The first line contains one integer t (1 ≤ t ≤ 1000) — number of test cases.
  
  Then t lines follow, the i-th line contains one integer n (1 ≤ n ≤ 10^9) for the i-th test case.
  
  Output
  
  Print t integers, the i-th should be the answer for the i-th test case.
  
  Example
  
  Input
  
  
  5
  1
  9
  10
  34
  880055535
  
  
  Output
  
  
  0
  1
  1
  3
  88005553
  
  Note
  
  The first interesting number is equal to 9.
solution: import java.util.*;
  import java.io.*;
  public class DSum 
  {
      static class InputReader
      {
          BufferedReader reader;
          StringTokenizer tokenizer;
          
          public InputReader(InputStream stream)
          {
              reader=new BufferedReader(new InputStreamReader(stream));
              tokenizer=null;
          }
          String next() 
          {
              while(tokenizer==null||!tokenizer.hasMoreTokens())
              {
                  try
                  {
                      tokenizer=new StringTokenizer(reader.readLine());
                  }
                  catch(IOException e)
                  {
                      throw new RuntimeException(e);
                  }
              }
              return tokenizer.nextToken();
          }
          public int nextInt()
          {
              return Integer.parseInt(next());
          }
          public long nextLong()
          {
              return Long.parseLong(next());
          }
          public double nextDouble()
          {
              return Double.parseDouble(next());
          }
      }
      static InputReader sc=new InputReader(System.in);
      static PrintWriter pw=new PrintWriter(System.out);
      public static void main(String ar[])
          {
              //Code here
              
              int t = sc.nextInt();
              while(t-- > 0)
              {
  			int a = sc.nextInt();
  			if(a < 9)
  			{
  				pw.println("0"); 
  				continue;
  			}
  			
  			else if(a==9)
  			{
  				pw.println("1");
  				continue;
  			}
  			else 
  			{
  				int div = (a+1)/10;
  				pw.println(div);
  			}
  		}
              
              pw.close();
          }
  }
      
  