School Queue

/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
 public class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	Scanner sc = new Scanner(System.in);
	int N = sc.nextInt();
	int T = sc.nextInt();
	String Queue = sc.next();
	char[]Q = new char[N];
	for(int i =0; i < N;i++){
	Q[i] = Queue.charAt(i);
	}
for(int i =0; i< T;i++){
for(int j = 1; j < N;j++){
if(Q[j-1] == 'B' && Q[j] == 'G'){
char temp = Q[j-1];
Q[j-1] = Q[j];
Q[j] = temp;
j++;
}	
}	
}
String result = "";
for(int i =0 ; i < Q.length;i++){
result+=Q[i];
}
System.out.println(result);
}
}