Set operations

Rivers

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Some states of the USA share their names with rivers. We have defined two variables with respective place names.

Print out a new set with river names that don't overlap with given states.

You can easily subtract the sets.

Sample Input 1:

Alabama Missouri Mississippi
Georgia Alaska Missouri

Sample Output 1:

{'Alabama', 'Mississippi'}

Write a program in Python 3

# work with these variables

rivers = set(input().split())

states = set(input().split())

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