Can you check my implementation of this problem? Whether it runs for all test cases or not?

#1

i have used global variable instead of Pair… What is good approach to solve these problem by using pair or using global variable…or simply both are good?

#2

global variable are easy to use because we dont have to pass it anywhere.they are accessible from anywhere.

but it is risky as well. because they r exposed to all the functions.

try to avoid global variable as much as u can.

to check whether u code is correct or not. u can submit it in ur challenge section or on hackerblocks