Cost of Groceries

Chef visited a grocery store for fresh supplies. There are $N$ items in the store where the $i^{th}$ item has a freshness value $A_i$ and cost $B_i$. Chef has decided to purchase **all** the items having a freshness value **greater than equal to** $X$. Find the total cost of the groceries Chef buys. ### Input - The first line of input will contain a single integer $T$, denoting the number of tes