Editorial for DMOPC '15 Contest 2 P5 - Sysadmin
                Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
                Submitting an official solution before solving the problem yourself is a bannable offence.
Authors: ,
The intended solution is the Convex Hull Trick. Implementation is left as an exercise.
Time Complexity: 
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