Comparing Strings

4.1

19 votes
Problem

You are given two strings, A and B. Find if there is a substring that appears in both A and B.

Input

The first line of the input will contain a single integer T, the number of test cases.

Then there will be T descriptions of the test cases. Each description contains two lines. The first line contains the string A and the second line contains the string B.

OUTPUT

For each test case, display YES (in a newline), if there is a common substring. Otherwise, display NO.

CONSTRAINTS

All the strings contain only lowercase Latin letters. 1<=T<=10 1<=|A|,|B|<=10^5

Sample Input
2
hello
world
hi
world
Sample Output
YES
NO
Time Limit: 5
Memory Limit: 256
Source Limit:
Explanation

For the 1st test case, the letter o is common between both strings, hence the answer YES.

For the 2nd test case, hi and world do not have a common substring, hence the answer NO.

Contributers:
Editor Image

?