1. (2022高二上·浙江月考) 某Python程序段如下：

def isdigit(x):

if "0" <= x <= "9":

return True

else:

return False

d = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

s = "1*8%6$3@0#19&0"

ans = ""

t = 0

for i in s:

if isdigit(i):

t = t * 10 + int(i)

else:

ans += d[t]

t = 0

print(ans)

运行该程序段，输出结果是。