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boj/11286.py

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+from sys import stdin
+from queue import PriorityQueue
+n=int(stdin.readline().rstrip())
+pq=PriorityQueue()
+
+for i in range(n):
+    inp=int(stdin.readline().rstrip())
+
+    if inp==0:
+        if pq.qsize()==0:
+            print(0)
+        else:
+            print(pq.get()[1])
+    else:
+        v=(abs(inp),inp)
+        pq.put(v)