@task
def t2(a: typing.List[int], b: typing.List[str]) -> (int, str):
    ra = 0
    for x in a:
        ra += x
    rb = ''
    for x in b:
        rb += x
    return (ra, rb)
@task
def t2(a: typing.List[int], b: typing.List[str]) -> (int, str):
    ra = 0
    for x in a:
        ra += x
    rb = 
    for x in b:
        rb += x
    return (ra, rb)