Codechef•Jul 18, 2025

Kitchen Timings

Hazrat Ali

Codechef

Find the number of hours Chef works.

Input Format

  • The first line of input will contain a single integer T, denoting the number of test cases.
  • Each test case consists of two space-separated integers X and Y — the starting and ending time of working hours respectively.

Output Format

For each test case, output on a new line, the number of hours Chef works.

Constraints

  • 1≤T≤100
  • 1≤X<Y≤12

Sample 1:

Input 
4
1 2
3 7
9 11
2 10

Output
 
1
4
2
8

Solution

T = int(input())

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



Comments