Peace,

In today's contest problem B, I tried to hack this solution 19690271, but all my 4 attempts where unsuccessful, then I decided to automate the hacking process with writing C++ code to try large random input on 2 versions of this code one with long and one with int but unfortunately 30 minutes without any break in the infinite loop which search for the test case, so I will be very thankful to the person who would explain to me why?