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Clear solution in Clear category for Pawn Brotherhood by vby
def safe_pawns(pawns: set) -> int:
safe=0
ind=set()
for i in pawns:
ind.add((int(i[1]),ord(i[0])))
for i in ind:
if (i[0]-1,i[1]-1) in ind or (i[0]-1,i[1]+1) in ind:
safe+=1
continue
return safe
Feb. 1, 2019