Problem1918--Lena and Queries

1918: Lena and Queries

Time Limit: 2 Sec  Memory Limit: 256 MB
Submit: 0  Solved: 0
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Description

time limit per test
4 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output

Lena is a programmer. She got a task to solve at work.

There is an empty set of pairs of integers and n queries to process. Each query is one of three types:

  1. Add a pair (a,b) to the set.
  2. Remove a pair added in the query number i. All queries are numbered with integers from 1 to n.
  3. For a given integer q find the maximal value x·q+y over all pairs (x,y) from the set.

Help Lena to process the queries.

Input

The first line of input contains integer n (1≤n≤3·105) − the number of queries.

Each of the next n lines starts with integer t (1≤t≤3) − the type of the query.

A pair of integers a and b (-109a,b≤109) follows in the query of the first type.

An integer i (1≤in) follows in the query of the second type. It is guaranteed that i is less than the number of the query, the query number i has the first type and the pair from the i-th query is not already removed.

An integer q (-109q≤109) follows in the query of the third type.

Output

For the queries of the third type print on a separate line the desired maximal value of x·q+y.

If there are no pairs in the set print "EMPTY SET".

Example
Input
7
3 1
1 2 3
3 1
1 -1 100
3 1
2 4
3 1
Output
EMPTY SET
5
99
5

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