Submission #39043154

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        int[] nk = Arrays.stream(in.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
        String s = in.readLine();
        int finalists = 0;
        String t = "";
        for(int a = 0; a < s.length(); a++)
        {
            if (s.charAt(a) == 'o') {
                t += 'o';
                finalists++;
            } else {
                t += 'x';
            }
            if (finalists == nk[1]) {
 
 
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        int[] nk = Arrays.stream(in.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
        String s = in.readLine();
        int finalists = 0;
        String t = "";
        for(int a = 0; a < s.length(); a++)
        {
            if (s.charAt(a) == 'o') {
                t += 'o';
                finalists++;
            } else {
                t += 'x';
            }
            if (finalists == nk[1]) {
               break;
            }
        }
        for (int b = t.length(); b<nk[0]; b++) {
            t += 'x';
        }
        System.out.println(t);
    }
}

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