Date: 2015-05-27 14:37:14
this test may help U.
the answer is (()()).
& also this test :
the answer is:
hope it'll be useful :)
| 22.10.12 - The problems from the Southern Subregional Programming Contest 2012 added to the problemset archive (542 - 553). |
22.10.12 - After the start of the contest the statements in PDF will be available by the link.
23.10.11 - The problems from the Southern Subregional Programming Contest 2011 added to the problemset archive (530 - 541).