given two integers n and k. You are approached to pick greatest number of particular integers from 1 to n so that there is no subset of picked numbers with aggregate equivalent to k.    A subset of a set is a set that can be gotten from starting one by eliminating a few (potentially all or none) components of it.

C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter4: Selection Structures
Section: Chapter Questions
Problem 14PP
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Correct answer will be upvoted else downvoted. Computer science.

 

 You are given two integers n and k. You are approached to pick greatest number of particular integers from 1 to n so that there is no subset of picked numbers with aggregate equivalent to k. 

 

A subset of a set is a set that can be gotten from starting one by eliminating a few (potentially all or none) components of it. 

 

Input 

 

The main line contains the number of experiments T (1≤T≤100). 

 

Every one of the following T lines contains two integers n and k (1≤k≤n≤1000) — the depiction of experiments. 

 

Output 

 

For each experiment output two lines. In the main line output a solitary integer m — the number of picked integers. 

 

In the subsequent line output m particular integers from 1 to n — the picked numbers. 

 

In case there are various replies, print any. You can print the numbers in any request

 

 

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