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Set of visited cells

A robot starts at (0, 0). Moves are a string of U, D, L, R. Write visited(moves) returning how many distinct cells it visited (including the start).

Examples

visited('URDL')
→ 4

visited('')
→ 1

Submit runs 5 tests, including hidden edge cases.

Hints(0/2)

Solution

Unlocks after you solve it or after 3 submissions

Python 3 · pandas · numpy

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Run your code to see the output here.