Three Strings (Codeforces 1301A)
Tags: Implement, strings

You are given three strings $$$a$$$, $$$b$$$ and $$$c$$$ of the same length $$$n$$$. The strings consist of lowercase English letters only. The $$$i$$$-th letter of $$$a$$$ is $$$a_i$$$, the $$$i$$$-th letter of $$$b$$$ is $$$b_i$$$, the $$$i$$$-th letter of $$$c$$$ is $$$c_i$$$.For every $$$i$$$ ($$$1 \leq i \leq n$$$) you must swap (i.e. exchange) $$$c_i$$$ with either $$$a_i$$$ or $$$b_i$$$. So in total you'll perform exactly $$$n$$$ swap operations, each of them either $$$c_i \leftrightarrow a_i$$$ or $$$c_i \leftrightarrow b_i$$$ ($$$i$$$ iterates over all integers between $$$1$$$ and $$$n$$$, inclusive).For example, if $$$a$$$ is "code", $$$b$$$ is "true", and $$$c$$$ is "help", you can make $$$c$$$ equal to "crue" taking the $$$1$$$-st and the $$$4$$$-th letters from $$$a$$$ and the others from $$$b$$$. In this way $$$a$$$ becomes "hodp" and $$$b$$$ becomes "tele".Is it possible that after these swaps the string $$$a$$$ becomes exactly the same as the string $$$b$$$?

Input: The input consists of multiple test cases. The first line contains a single integer $$$t$$$ ($$$1 \leq t \leq 100$$$)  — the number of test cases. The description of the test cases follows.The first line of each test case contains a string of lowercase English letters $$$a$$$.The second line of each test case contains a string of lowercase English letters $$$b$$$.The third line of each test case contains a string of lowercase English letters $$$c$$$.It is guaranteed that in each test case these three strings are non-empty and have the same length, which is not exceeding $$$100$$$.

Output: Print $$$t$$$ lines with answers for all test cases. For each test case:If it is possible to make string $$$a$$$ equal to string $$$b$$$ print "YES" (without quotes), otherwise print "NO" (without quotes).You can print either lowercase or uppercase letters in the answers.

Note: In the first test case, it is impossible to do the swaps so that string $$$a$$$ becomes exactly the same as string $$$b$$$.In the second test case, you should swap $$$c_i$$$ with $$$a_i$$$ for all possible $$$i$$$. After the swaps $$$a$$$ becomes "bca", $$$b$$$ becomes "bca" and $$$c$$$ becomes "abc". Here the strings $$$a$$$ and $$$b$$$ are equal.In the third test case, you should swap $$$c_1$$$ with $$$a_1$$$, $$$c_2$$$ with $$$b_2$$$, $$$c_3$$$ with $$$b_3$$$ and $$$c_4$$$ with $$$a_4$$$. Then string $$$a$$$ becomes "baba", string $$$b$$$ becomes "baba" and string $$$c$$$ becomes "abab". Here the strings $$$a$$$ and $$$b$$$ are equal.In the fourth test case, it is impossible to do the swaps so that string $$$a$$$ becomes exactly the same as string $$$b$$$.

Sample Inputs:
4
aaa
bbb
ccc
abc
bca
bca
aabb
bbaa
baba
imi
mii
iim

Sample Outputs:
NO
YES
YES
NO

Solution (Python):
for _ in range(int(input())):
    a = input()
    b = input()
    c = input()
    for i in range(len(a)):
        if c[i] not in (a[i], b[i]):
            print('NO')
            break
    else:
        print('YES')

Solution (Python):
a = input
for _ in range(int(a())):
    print('YES' if all((c in (d, b) for (d, b, c) in zip(a(), a(), a()))) else 'NO')

Solution (Python):
t = int(input())
for i in range(t):
    a = input()
    b = input()
    c = input()
    if all(map(lambda x, y, z: x == z or y == z, a, b, c)):
        print('YES')
    else:
        print('NO')