题解 | #字符串字符匹配#

while True:
    try:
        a = list(input())
        b = list(input())
        len_a = len(a)
        len_b = len(b)
        if(len_a > len_b): #保证a始终是短的字符串
            c = a
            a = b
            b = c
            c = len_a
            len_a = len_b
            len_b = c
        k = 0
        flag = 0
        for i in range(len_a):
            for j in range(len_b):
                if(a[i] == b[j]): #若a的字符在b中出现
                    flag += 1 #flag + 1
                    break
        if(flag == len_a): #若都出现
            print('true')
        else:
            print('false')
    except:
        break