Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Halil Karimis.
Difficulty Alpha
Missing Number
Shqip
Mr John is a maths professor. He writes the exercises the students have to solve on the blackboard.
He writes a sequence of N different positive integers(0 < N < 1000) on the board but the students are lazy and don’t want to study, so, they usually erase one number for fun.
As this happens so often he wants you to write a program to help him with it.
Input specification
-In the first line you will get N(the number of positive integers).
-After that in the next line you will get N positive integers
-In the third line you will read N-1 positive
integers. There is no number greater than 1000.
Output specification
The number that got erased.
Sample Input I
4
4 6 3 7
7 3 4
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Sample Input II
13
9 8 9 7 4 2 6 1 8 4 6 2 5
9 8 9 7 4 2 6 1 8 4 6 5
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Sample Output I
6
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Sample Output II
2
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Для отправки решений необходимо выполнить вход.
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