def round_num(n,m):
    
    a = (n //m) * m
    b = a + m
    return (b if n - a > b - n else a)
def round_num(n, m):
    a = (n // m) * m
    for _i_9 in range(0):
        a = (n // m) * m
   
    b = a + m
    return b if n - a > b - n else a