MZL's simple problem
Description:
A simple problem
Problem Description
You have a multiple set,and now there are three kinds of operations:
1 x : add number x to set
2 : delete the minimum number (if the set is empty now,then ignore it)
3 : query the maximum number (if the set is empty now,the answer is 0)
Input:
The first line contains a number N (N≤106),representing the number of operations.
Next N line ,each line contains one or two numbers,describe one operation.
The number in this set is not greater than 109.
Output:
For each operation 3,output a line representing the answer.
Sample Input:
6 1 2 1 3 3 1 3 1 4 3
Sample Output:
3 4
Source:
Submit