Editorial for WC '17 Contest 4 J3 - The Infinity Stones - Olympiads Online Judge

Editorial for WC '17 Contest 4 J3 - The Infinity Stones

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We'll need to iterate over the $6$ $6$ Infinity Stone names in alphabetical order and output each one that's not present in the given list of $N$ $N$ names. To determine whether a certain Infinity Stone name $s$ $s$ should be outputted, we can iterate over all $N$ $N$ of the given names while keeping track of whether or not we've found one which is equal to $s$ $s$ .

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