a=input("请输入：")
min=a[0]
for i in a:
    if i<min:
        min=i
print(min)

208ab068c1bf4c74e873852bd761587f34db5e46
<mask token>

<mask token>
for i in a:
    if i < min:
        min = i
print(min)

a = input('请输入：')
min = a[0]
for i in a:
    if i < min:
        min = i
print(min)

a=input("请输入：")
min=a[0]
for i in a:
    if i<min:
        min=i
print(min)
