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  1. import java.util.*;
  2.  
  3. public class Main {
  4.  
  5.     public static void main(String[] args) {
  6.         Scanner sc = new Scanner(System.in);
  7.         String map = sc.next();
  8.         int leftSteps = 0;
  9.         int rightSteps = 1;
  10.         for (char c : map.toCharArray()) {
  11.             switch (c) {
  12.                 case 'L':
  13.                     leftSteps = Math.min(rightSteps+1, leftSteps+1);
  14.                     break;
  15.                 case 'R':
  16.                     rightSteps = Math.min(rightSteps+1, leftSteps+1);
  17.                     break;
  18.                 case 'B':
  19.                     leftSteps++;
  20.                     rightSteps++;
  21.                     break;
  22.                 default:
  23.                     throw new RuntimeException("Error input: " + map);
  24.             }
  25.         }
  26.         System.out.println(rightSteps);
  27.     }
  28.  
  29. }
Runtime error #stdin #stdout #stderr 0.05s 711680KB
comments ()
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Exception in thread "main" java.util.NoSuchElementException
	at java.util.Scanner.throwFor(Scanner.java:862)
	at java.util.Scanner.next(Scanner.java:1371)
	at Main.main(Main.java:7)
https://ideone.com/34HGKf
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

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