Codechef•Jul 09, 2025

Saving Taxes

Hazrat Ali

Codechef

In Chefland, everyone who earns strictly more than Y rupees per year, has to pay a tax to Chef. Chef has allowed a special scheme where you can invest any amount of money and claim exemption for it.

You have earned X (X>Y)rupees this year. Find the minimum amount of money you have to invest so that you don't have to pay taxes this year.

Input Format

  • The first line of input will contain a single integer T, denoting the number of test cases.
  • Each test case consists of a single line of input consisting of two space separated integers X and Y denoting the amount you earned and the amount above which you will have to pay taxes.

Output Format

For each test case, output a single integer, denoting the minimum amount you need to invest.

Constraints

  • 1≤T≤100
  • 1≤Y<X≤100

Sample 1:

Input 
4
4 2
8 7
5 1
2 1

Output
2
1
4
1

Solution

T = int(input())

for _ in range(T):
    X, Y = map(int, input().split())
    print(X - Y)





 

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