import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
HashMap<Integer, String> map = new HashMap<>();
while (in.hasNext()) {
int n = Integer.parseInt(in.nextLine());
int flag = Integer.parseInt(in.nextLine());
int[][] score = new int[n][2];
for (int i = 0; i < n; i++) {
String[] strs = in.nextLine().split(" ");
score[i][0] = i;
score[i][1] = Integer.parseInt(strs[1]);
map.put(i, strs[0]);
}
Arrays.sort(score, ((o1, o2) -> {
if (flag == 0) {
return o2[1] - o1[1];
} else {
return o1[1] - o2[1];
}
}));
for (int i = 0; i < n; i++) {
System.out.println(map.get(score[i][0]) + " " + score[i][1]);
}
}
}
}
