解 2861: 验证子串

解题思路:

注意事项:

参考代码:

a = input().strip()

b = input().strip()

if a.find(b) != -1:

    print(f"{b} is substring of {a}")

elif b.find(a) != -1:

    print(f"{a} is substring of {b}")

else:

    print("No substring")