was the problem i was trying.
this problem considers that alice buys item 1 and only then buys item 2 and so on. my question is, what will be the time complexity if she can buy item 2 first and then item 1.
eg input:
1
3 2
2 2
4 4
7 7
1 1
2 2
5 5
present question would give an answer of 10. but my question would give an answer of 7.
