说明

有t个团队的人正在排一个长队。每次新来一个人时，如果他有队友在排队，那么新人会插队到最后一个队友的身后。如果没有任何一个队友排队，则他会被排到长队的队尾。 输入每个团队中所有队员的编号，要求支持如下3中指令： ENQUEUE x：编号为x的人进入长队 DEQUEUE：长队的队首出队 STOP：停止模拟 对于每个DEQUEUE指令，输出出队的人的编号。

输入格式

The input will contain one or more test cases. Each test case begins with the number of teams t (1<=t<=1000). Then t team desc<x>riptions follow, each one consisting of the number of elements belonging to the team and the elements themselves. Elements are integers in the range 0 - 999999. A team may consist of up to 1000 elements. </span>
Finally, a list of commands follows. There are three different kinds of commands: 

• ENQUEUE x - enter element x into the team queue 
  
• DEQUEUE - process the first element and remove it from the queue 
  
• STOP - end of test case

The input will be terminated by a value of 0 for t. 
Warning: A test case may contain up to 200000 (two hundred thousand) commands, so the implementation of the team queue should be efficient: both enqueing and dequeuing of an element should only take constant time.

输出格式

For each test case, first print a line saying "Scenario #k", where k is the number of the test case. Then, for each DEQUEUE command, print the element which is dequeued on a single line. Print a blank line after each test case, even after the last one. 

样例

2
3 101 102 103
3 201 202 203
ENQUEUE 101
ENQUEUE 201
ENQUEUE 102
ENQUEUE 202
ENQUEUE 103
ENQUEUE 203
DEQUEUE
DEQUEUE
DEQUEUE
DEQUEUE
DEQUEUE
DEQUEUE
STOP
2
5 259001 259002 259003 259004 259005
6 260001 260002 260003 260004 260005 260006
ENQUEUE 259001
ENQUEUE 260001
ENQUEUE 259002
ENQUEUE 259003
ENQUEUE 259004
ENQUEUE 259005
DEQUEUE
DEQUEUE
ENQUEUE 260002
ENQUEUE 260003
DEQUEUE
DEQUEUE
DEQUEUE
DEQUEUE
STOP
0

Scenario #1
101
102
103
201
202
203
Scenario #2
259001
259002
259003
259004
259005
260001