ADAQUEUE - Ada and Queue
Ada the Ladybug has many things to do. She puts them into her queue. Anyway she is very indecisive, so sometime she uses the top, sometime the back and sometime she decides to reverses it.
Input
The first line consists of 1 ≤ Q ≤ 106, number of queries. Each of them contains one of following commands
back - Print number from back and then erase it
front - Print number from front and then erase it
reverse - Reverses all elements in queue
push_back N - Add element N to back
toFront N - Put element N to front
All numbers will be 0 ≤ N ≤ 100
Output
For each back/front query print appropriate number.
If you would get this type of query and the queue would be empty, print "No job for Ada?" instead.
Example Input
15 toFront 93 front back reverse back reverse toFront 80 push_back 53 push_back 50 front front reverse push_back 66 reverse front
Example Output
93 No job for Ada? No job for Ada? 80 53 66
hide comments
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undefine:
2018-09-04 11:14:45
*try STL
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avik26091998:
2017-12-04 17:32:30
Used Double Linked List...0.16s...Lot of Typing... |
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thalysmg:
2017-11-09 21:33:12
I'm getting WA in python, dont know y. I cant find a test case which breaks my code. Last edit: 2017-11-09 21:34:27 |
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saltyfish233:
2017-10-26 08:45:33
Easy problem. AC in one go. Just remember you don`t need to reverse your queue actually. |
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nadstratosfer:
2017-10-18 02:26:37
Solvable in Python, not a given with a Morass' problem. If TLE, make it your Data Structures Awareness Day. |
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morass:
2017-06-22 13:36:09
@aditya_rev: imho it is deleting first element of vector ^_^ |
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aditya_rev:
2017-06-21 19:13:02
what? how can i got tle?:/ no need O(n) to reverse. |
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vanvinhbk94:
2017-02-28 16:30:59
Final AC.nice problem :)) |
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morass:
2017-02-25 17:50:48
@kasiekdec: I think there shall be no problem with speed of IO. Anyway your algorithm seems to work in O(N^2) which is too much for this problem - so I guess you shall investigate this :)
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kasiekdec:
2017-02-25 15:29:21
I am getting runtime error in c++... I tried to use scanf for reading input, but I cannot check input (e.g. if there is nothing to be put in a queue like 'reverse'/'back'/'front'. Could this be solved with streams (cin?)? Any hints for c++? |
| Added by: | Morass |
| Date: | 2016-09-06 |
| Time limit: | 3.5s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: ASM64 GOSU |
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