题解 | #字符个数统计#

存

```while True:
    try:
        str= input().strip()
        str = set(str)
        for i in str:
            count = 0
            for i in str:
                if 0 <= ord(i) <= 127:
                    count += 1
        print(count)
    except:
        break

``` js

```print(
    len(
        [i for i in set(input().strip())if 0<=ord(i)<=127]
    )
)