266B. Queue at the School.cpp

//============================================================================
//problem link:http://codeforces.com/problemset/problem/266/B
// Name        : .cpp
// Author      : mohand sakr
// Version     :
// Copyright   : use it under your responsibility
// Description : Hello World in C++, Ansi-style
//status:accepted
//============================================================================

#include <iostream>
#include<string>
using namespace std;
int main() {
	int n,t;
	cin>>n>>t;
	string s;
	cin>>s;
	for(int i=0;i<t;i++){
		for(int j=1;j<n;j++)
		{
			if(s[j-1]=='B'&&s[j]=='G'){
				swap(s[j-1],s[j]);++j;
			}
		}
	}
	cout<<s;
 	return 0;
}