3-12 bob 실행 오류

해당 코드 입력하고 했는데 안되네요 어느부분이 문제일까요<img alt="스파르타 즉문즉답" src="https://cdn-media.spartaclub.kr/media/tempfiles/community/NzkyNzIzLjA4NjY1MDI3OTkxNjYyODk3NjQ1NjQ1.png"><img alt="스파르타 즉문즉답" src="https://cdn-media.spartaclub.kr/media/tempfiles/community/ODY1ODUuNjE5NjI4MTUyOTMxNjYyODk3NzA4MTc3.png"><img alt="스파르타 즉문즉답" src="https://cdn-media.spartaclub.kr/media/tempfiles/community/NjM4MTExLjA5NzY1MTE1NzkxNjYyODk3NzE3Nzg1.png"><img alt="스파르타 즉문즉답" src="https://cdn-media.spartaclub.kr/media/tempfiles/community/MjcwODAuMDgwNjUzMDI4Njk0MTY2Mjg5NzcyOTExMg=.png"><img alt="스파르타 즉문즉답" src="https://cdn-media.spartaclub.kr/media/tempfiles/community/NjMxMzk0LjA2NTUxNDYyNzMxNjYyODk3NzM4MTg2.png">