a string s call happy satisfie follow conditions contain letters b cs contain aaa bbb ccc substrings contain occurrence letter contain b occurrence letter bs contain c occurrence letter cGiven integer b c return long possible happy string if multiple long happy string return if string return string a substre contiguous sequence character string Example 1input 1 b 1 c 7output ccaccbccExplanation ccbccacc correct answerExample 2input 7 b 1 c 0output aabaaexplanation it correct answer case Constraints0 b c 100a b c 0