Exchanging Coind

#1

I am getting run time error on test case 1 and test case 2 is getting correct answer.
Link to my code - https://ide.codingblocks.com/s/238238

#2

hello @mittalavi2001
value of n can be upto 10^9 and we cannot declare dp array of that size because it will require too much memory.
so use map in place of array .

#3

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