Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
First solution in Clear category for Pawn Brotherhood by Johny9700
def safe_pawns(pawns):
count=0
paw_ind=set()
for p in pawns:
row=int(p[1])
col=ord(p[0])
paw_ind.add((row,col))
for row, col in paw_ind:
is_safe=((row-1,col-1) in paw_ind) or ((row -1,col+1)in paw_ind)
if is_safe:
count+=1
return count
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. 21, 2016
