Problem
Given two integers, A and B, swap their values and print them.
Input format
Input
input.txt
- Two integers, A and B, on a single line, separated by a space. (-1000 ≤ A, B ≤ 1000)
Output format
Output
output.txt
- Two integers: B then A, separated by a space.
Example
input
10 20
output
20 10
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Sample cases (from the problem)
Sample Case 1
Input
10 20
Expected output
20 10
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