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4.9. For: Lost card
pole55

"There was a set of cards with numbers from 1 to N. One of the card is now lost. Determine the number on that lost card given the numbers for the remaining cards.

Given a number N, followed by N − 1 integers representing the numbers on the remaining cards (distinct integers in the range from 1 to N). Find and print the number on the lost card."

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