When I used multimap it gives wrong but when I used multiset it gives AC, What is the difference in code it made WA CodeChef: Practical coding for everyone and AC CodeChef: Practical coding for everyone.
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Use a map<int,vector> with h as key and store the corresponding x in vector. Sort the vector and apply lower bound in it and the check for the conditions u did in your code. I hope this helps, if not I will provide u with the code.
I am not asking for this bro , read my doubt please .