So, here's my solution in Python, it seems to be working for all the test cases I've input but CodeChef is marking it NZEC Runtime Error for some reason. It would be great if someone shall be able to help me figure out the way to prevent this error.

for q in range(2):
	a=list(map(int,input().split()))
	n = a[0]
	k = a[1]
	one = a[2:n+2] 
	two = a[n+2:]
	three = a[2:n+2]
	four = a[n+2:]
	one.sort()
	two.sort()
	three.sort()
	four.sort()
	for i in range(0,k):
		if max(one) > min(two):
			temp = max(one)
			one[-1] = min(two)
			two[0] = temp
	ans1 = max(one) + max(two)

Yes, definitely you can, I am not even someone credible to answer this question but just that I'm in the same position. Have been programming since 3 years(started at 13, already feel that I was very late) but concentrated more on learning different languages and technologies in place of paying attention to one.