LCC '18 Contest 1 J3 - Operator Simulation

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Points: 5 (partial)
Time limit: 2.0s
Memory limit: 64M

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Problem type

Augustus is doing his binary math homework. He is not sure that his answers are correct, so he wants to check his answers with you.

Recall that the 3 primary binary operators are the or (|), and (&), and xor (^) operators.

Operator Details

The or operator will output 1 if either inputs are 1, and 0 otherwise.

  • 1 | 1 = 1
  • 0 | 1 = 1
  • 1 | 0 = 1
  • 0 | 0 = 0

The and operator will output 1 if both inputs are 1, and 0 otherwise.

  • 1 & 1 = 1
  • 0 & 1 = 0
  • 1 & 0 = 0
  • 0 & 0 = 0

The xor operator will output 1 if exactly one of the inputs is 1, and 0 otherwise.

  • 1 ^ 1 = 0
  • 0 ^ 1 = 1
  • 1 ^ 0 = 1
  • 0 ^ 0 = 0

Help Augustus check his answers by simulating these operators on some numbers!

Input Specification

The first line will contain the integer N\ (1 \le N \le 100), the length of each number in binary.

The second line will contain the first number in binary, a, the operator to simulate, o, and the second number in binary, b, separated by spaces.

  • If o is |, you must simulate the or operator.
  • If o is &, you must simulate the and operator.
  • If o is ^, you must simulate the xor operator.

It is guaranteed both a and b will be of length N.

Output Specification

Output the resultant number in binary after the performing the specified operation o on a and b.

Sample Input 1

5
10111 & 11100

Sample Output 1

10100

Sample Input 2

6
101111 ^ 110011

Sample Output 2

011100

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