import java.util.*;
import java.lang.*;
import java.io.*;
class Main {
public static void main(String[] args) {
PriorityQueue<Integer> minHeap = new PriorityQueue<>();
minHeap.add(60);
minHeap.add(10);
minHeap.add(50);
minHeap.add(20);
minHeap.add(40);
minHeap.add(70);
while (!minHeap.isEmpty()) {
System.out.println(minHeap.poll());
}
System.out.println("----");
PriorityQueue<Integer> maxHeap = new PriorityQueue<>((x, y) -> y - x);
maxHeap.add(60);
maxHeap.add(10);
maxHeap.add(50);
maxHeap.add(20);
maxHeap.add(40);
maxHeap.add(70);
while (!maxHeap.isEmpty()) {
System.out.println(maxHeap.poll());
}
}
}
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