guys. i m getting TLE in wstring . How to optimize it??

my solution

When you’re precalculating countchar it will work with complexity O(length * length) in worst case. You can change a way how to calculate it.


 if(a[0] != '#')
      countchar[0][a[0] - 'a'] = 1;
 for(i = 1; i < length; i++)
 {
      for(j = 0; j < 26; j++)
          countchar[i][j] = countchar[i - 1][j];
      if(a[i] != '#')
          countchar[i][a[i] - 'a']++;
 }

1 Like

thanks … got an ac :slight_smile:

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