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set of coords solution in Clear category for Rectangles Union by l.szyman10
from typing import List, Tuple
def rectangles_union(recs: List[Tuple[int]]) -> int:
area = set()
for rec in recs:
new = {(i, j) for i in range(rec[0], rec[2]) for j in range(rec[1], rec[3])}
area |= new
return len(area)
Feb. 1, 2021
