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MBPP / 438 / Write a function to count bidirectional tuple pairs.

Problem

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prompt

Write a function to count bidirectional tuple pairs.

test list

  • assert count_bidirectional([(5, 6), (1, 2), (6, 5), (9, 1), (6, 5), (2, 1)] ) == 3
  • assert count_bidirectional([(5, 6), (1, 3), (6, 5), (9, 1), (6, 5), (2, 1)] ) == 2
  • assert count_bidirectional([(5, 6), (1, 2), (6, 5), (9, 2), (6, 5), (2, 1)] ) == 4

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