InterviewBit Problems   Pair With Given Difference : Unsolved

About the Pair With Given Difference : Unsolved category (1)
Wrong test case | Expected value incorrect (7)
Expected output is for given Testcase (1)
Can someone help me in reducing time complecity of my code (1)
Why this code gives wrong output for test case having B=369 (1)
Pathological test case for Submit (2)
Elegant soln C++ (1)
Can anybody tell whats wrong with this code (1)
It should be under Hashing Topic (2)
Please check the code and do give me ans (2)
Topic MisMatch and Duplicate (1)