Rikka with string
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 937 Accepted Submission(s): 334
One day, Yuta got a string which contains n letters but Rikka lost it in accident. Now they want to recover the string. Yuta remembers that the string only contains lowercase letters and it is not a palindrome string. Unfortunately he cannot remember
some letters. Can you help him recover the string?
It is too difficult for Rikka. Can you help her?
For each test case, The first line contains a number n(1≤n≤1000).
The next line contains an n-length string which only contains lowercase letters and ‘?’
波比源码 » HDU-5202-Rikka with string(DFS + WrongAnswer)