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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. public class  Main
  9. {
  10.     public static void main (String[] args) throws java.lang.Exception
  11.     {
  12.         // your code goes here
  13.  
  14.          BufferedReader inp=new BufferedReader(new InputStreamReader(System.in));
  15.          String s[]=inp.readLine().split(" ");
  16.          int a=Integer.parseInt(s[0]);
  17.          int b=Integer.parseInt(s[1]);
  18.  
  19.          if(a<b)
  20.           System.out.println(0);
  21.         else if(a==b)
  22.           System.out.println("infinity");
  23.           else
  24.            {
  25.  
  26.              int count=0;
  27.              for(int i=2;i*i<=a-b;i++)  
  28.                  {    
  29.                     if((a-b)%i==0)
  30.                        {
  31.                             if(i>b)
  32.                               count++;
  33.                             if(((a-b)/i)>b && (i*i!=a-b))
  34.                               count++;
  35.                          }
  36.                   }
  37.                      if(b==0 && a==1)
  38.                   {
  39.                      count=count+1;
  40.                      System.out.println(count);
  41. return;
  42. }
  43.              else if(b==0 && a!=1)
  44.                System.out.println(count+2);
  45. else if(b<a-b)
  46. System.out.println(count+1);
  47. else if(b>a-b)
  48.         System.out.println(count);
  49.            }
  50.     }
  51. }
Success #stdin #stdout 0.07s 380224KB
comments (?)
stdin 
21 5
stdout 
2
https://ideone.com/FznGYz
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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