Add Odd or Subtract Even Coding Question-Codeforces rated 800

Problem Statement :

You are given two positive integers a and b.

In one move, you can change a in the following way:-

Choose any positive odd integer x (x>0) and replace a with a+x;

choose any positive even integer y (y>0) and replace a with a−y.

You can perform as many such operations as you want. You can choose the same numbers x and y in different moves.

Your task is to find the minimum number of moves required to obtain b from a. It is guaranteed that you can always obtain b from a.

You have to answer t independent test cases.

Input Format:

The first line of the input contains one integer t (1≤t≤10^4) — the number of test cases.

Then t test cases follow. Each test case is given as two space-separated integers a and b (1≤a,b≤10^9).

Output Format:

For each test case, print the answer — the minimum number of moves required to obtain bb from aa if you can perform any number of moves described in the problem statement. It is guaranteed that you can always obtain b from a.

Given:

5
2 3
10 10
2 4
7 4
9 3

Output:

1
0
2
2
1

Explanation of Test Case:

In the first test case, you can just add 1.
In the second test case, you don't need to do anything.
In the third test case, you can add 1 two times.
In the fourth test case, you can subtract 4 and add 1.
In the fifth test case, you can just subtract 6.

Code:

Thanks for Reading

Placewit grows the best engineers by providing an interactive classroom experience and by helping them develop their skills and get placed in amazing companies.

Learn more at Placewit. Follow us on Instagram and Facebook for daily learning.