## Editorial for DMOPC '18 Contest 6 P4 - Tank

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**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.**Authors:

Sort the physical and magical attacks by their value and compute a prefix sum for each one. For each unit, we can binary search the attacks to determine how many attacks are completely negated due to their defense/resistance, as well as the total of the attacks which are not negated using the prefix sum. Then we can compute the total damage for each unit by subtracting their defense/resistance multiplied by the number of non-negated attacks from the total of the attacks not completely negated.

**Time Complexity:**

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