# DCP-272: Find the Intersection Back to All Problems

Easy Math > Basic Math

Rahul is very lazy person. His younger brother reads in class 8. One day his brother came to him and asked to solve a problem from set theory. The problem is about to find the Intersection of many sets. Intersection of many sets refers to the elements which are included to all sets. Here is an example of Intersection of two sets **A** and **B**, where **A ∩ B** is the expected result of this. ![enter image description here][1] As Rahul is very lazy, he asked you to write a program to solve this. Can you please help him? Input: ------ Input starts with an integer **T (1≤ T≤ 10)**, denoting the number of test cases. Each case contains an integer **S (2 ≤ S ≤ 10)** denoting the total number of elements of a Set . The next **S** lines will contain **N distinct** integers separated by spaces **(1≤ N≤ 20)** , denoting the elements of a Set. All the elements of set will be an positive integer number less than 1000. Output: ------- For each case of input, output will be a single line, which contains the elements of expected result separated by spaces in **increasing order**. As the answer could have no elements, print **Empty** in that case. Sample Input ------------ 2 2 1 2 4 3 5 2 10 3 1 19 22 102 3 1 2 3 4 Sample Output ------------- 1 2 3 Empty [1]: https://s3-ap-southeast-1.amazonaws.com/devskillimagestorage/questionimages/83adde1c-a64c-c722-2f25-08d45af7e586_c98c82b6879849e78aab7cefdd8f211b_W350xH250.jpg

### Problem Limits

 Language Time Limit (seconds) C 1.00 C++ 1.00 C++14 1.00 C# 1.00 Go 1.00 Java 1.00 JavaScript 1.00 Objective-C 1.00 Perl 1.00 PHP 1.00 Python 1.00 Python3 1.00 Ruby 1.00 VB.Net 1.00

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