import "hashes/sha256/512bit.code" as sha256
def main() -> (field):

field[256] a = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
field[256] b = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1]

field[256] digest = sha256(a, b)

digest == [0 ,0 ,0 ,1 ,1 ,1 ,1 ,1 ,0 ,0 ,1 ,1 ,1 ,0 ,1 ,1 ,1 ,0 ,0 ,0 ,1 ,0 ,1 ,1 ,1 ,0 ,0 ,1 ,1 ,0 ,0 ,0 ,1 ,1 ,0 ,0 ,0 ,0 ,1 ,0 ,0 ,0 ,0 ,1 ,1 ,1 ,1 ,0 ,1 ,0 ,1 ,1 ,1 ,0 ,0 ,0 ,1 ,0 ,0 ,1 ,0 ,1 ,0 ,0 ,0 ,0 ,1 ,1 ,1 ,1 ,0 ,0 ,1 ,0 ,0 ,0 ,1 ,1 ,1 ,0 ,1 ,1 ,1 ,0 ,0 ,0 ,1 ,1 ,0 ,0 ,1 ,1 ,0 ,0 ,1 ,0 ,0 ,0 ,1 ,0 ,1 ,1 ,0 ,0 ,0 ,0 ,0 ,1 ,0 ,1 ,0 ,0 ,0 ,0 ,0 ,1 ,0 ,1 ,0 ,0 ,1 ,0 ,1 ,1 ,0 ,1 ,1 ,0 ,0 ,0 ,0 ,1 ,0 ,0 ,0 ,0 ,0 ,1 ,0 ,1 ,0 ,1 ,0 ,1 ,0 ,1 ,1 ,0 ,0 ,0 ,1 ,0 ,0 ,1 ,1 ,0 ,0 ,0 ,0 ,1 ,0 ,1 ,0 ,0 ,1 ,1 ,1 ,0 ,0 ,1 ,1 ,1 ,0 ,0 ,1 ,1 ,1 ,0 ,0 ,0 ,1 ,1 ,1 ,1 ,0 ,0 ,1 ,1 ,0 ,1 ,0 ,1 ,1 ,1 ,1 ,0 ,1 ,1 ,1 ,1 ,0 ,0 ,0 ,1 ,0 ,0 ,1 ,1 ,1 ,0 ,1 ,0 ,0 ,0 ,0 ,0 ,0 ,1 ,1 ,1 ,1 ,0 ,1 ,1 ,1 ,1 ,1 ,0 ,1 ,0 ,1 ,0 ,1 ,1 ,0 ,0 ,1 ,1 ,0 ,0 ,0 ,0 ,1 ,1 ,1 ,1 ,0 ,1 ,0 ,0 ,1 ,0 ,1 ,1 ,0 ,1]

return 1