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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. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13.         Scanner in =new Scanner(System.in);
  14. 		String a = in.nextLine();
  15. 		String b = in.nextLine();
  16. 		int n=a.length();
  17. 		int [] dp=new int [n+1];
  18. 		for(int i=n-1;i>=0;i--){
  19. 		    int len=Math.abs(n-i)-1;
  20.  
  21. 		    if(a.charAt(i)>b.charAt(0)){
  22. 		        dp[i] = dp[i+1] +(int) (Math.pow(2,len));
  23. 		    }
  24.  
  25. 		    else if(a.charAt(i)<b.charAt(0)){
  26. 		        dp[i] = dp[i+1];
  27. 		    }
  28.  
  29. 		    else if(a.charAt(i)==b.charAt(0)){
  30. 		        dp[i] = dp[i+1] + (int)(Math.pow(2,len)-1);
  31.             }
  32.             System.out.println(dp[i]);
  33. 		}
  34.  
  35. 		in.close();
  36. 	}
  37. }
Success #stdin #stdout 0.15s 56772KB
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https://ideone.com/xt760V
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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