Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
int with base=18 solution in Clear category for Pawn Brotherhood by xiaozhan
safe_pawns = lambda pawns : sum(any([int(item[::-1],18)-int(i[::-1],18) in [17, 19] for i in pawns - {item}]) for item in pawns)
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"}) == 6
assert safe_pawns({"b4", "c4", "d4", "e4", "f4", "g4", "e5"}) == 1
Nov. 17, 2015
Comments: