266B - Queue at the School Codeforces || Codeforces 266B - Queue at the School Solution

#include <iostream>
#include <string>

using namespace std;

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

    return 0;
}