Winning CB scholarship :testcAses not passing

#1

https://ide.codingblocks.com/s/61544
it does not pass the last three test cases .Also,the input given is in file format ,can u please tell me how to read the input from the file .It is not being taught in the lectures.

#2

Hi, the input is not in file format, it is normal input just like the way you’ve taken in your code. Test files 1 and 2 are just two different sample inputs. Your code is correct, just change the data types to long long int because of the constraints i.e. 1 ≤ N,M,X,Y ≤ 10^9 ​​.
I’ve done it here: https://ide.codingblocks.com/s/61562