266B - Queue at the school.cpp

#include <iostream>
#include <string>
#include <algorithm>

using namespace std;

int main(){
	int n, t;
	string s;
	cin >> n >> t;
	cin >> s;
	
	while(t--){
		for(int i = 0; i < n; i ++){
			if(s[i] == 'B' && s[i+1] == 'G'){
			swap(s[i], s[i+1]);
			i++;
		}
			else{
				continue;
			}
		}
	}
	
	cout << s;
}