2022. Election Time

The cows are having their first election after overthrowing the tyrannical Farmer John, and Bessie is one of $N$ cows $(1\le N\le 50,000)$ running for President. Before the election actually happens,however, Bessie wants to determine who has the best chance of winning.

The election consists of two rounds. In the first round, the $K$ cows $(1\le K\le N)$ cows with the most votes advance to the second round. In the second round, the cow with the most votes becomes President.

Given that cow i expects to get $A_i$ votes $(1\le A_i\le 1,000,000,000)$ in the first round and $B_i$ votes $(1\le B_i\le 1,000,000,000)$ in the second round (if he or she makes it), determine which cow is expected to win the election. Happily for you, no vote count appears twice in the $A_i$ list; likewise, no vote count appears twice in the $B_i$ list.