Implementation Difficulty in the String Problem

Revision en1, by hulk_baba, 2016-12-31 21:58:50

Please go through this problem 716B. My idea is : 1. if length of string in less than 26 , print "-1" and return ; 2. calculate frequency of first 26 characters and then see how many characters are left out and how many '?' are available . 3. If left out == '?' it is possible.

  1. I tried it but failed on 18th test caseYour text to link here...? Could you help me with my implementation. Or if you have more elegant implementation please suggest me.

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en3 English hulk_baba 2016-12-31 22:00:27 22 Tiny change: ' test case[Your text to link here...](http://c' -> ' test case [here](http://c'
en2 English hulk_baba 2016-12-31 21:59:52 30
en1 English hulk_baba 2016-12-31 21:58:50 612 Initial revision (published)