Problem Statement

Takahashi is at an all-you-can-eat restaurant.

The restaurant offers $N$ kinds of dishes. It takes $A_i$ minutes to eat the $i$-th dish, whose deliciousness is $B_i$.

The restaurant has the following rules:

• You can only order one dish at a time. The dish ordered will be immediately served and ready to eat.
• You cannot order the same kind of dish more than once.
• Until you finish eating the dish already served, you cannot order a new dish.
• After $T-0.5$ minutes from the first order, you can no longer place a new order, but you can continue eating the dish already served.

Let Takahashi's happiness be the sum of the deliciousness of the dishes he eats in this restaurant.

What is the maximum possible happiness achieved by making optimal choices?

Constraints

• $2 \leq N \leq 3000$
• $1 \leq T \leq 3000$
• $1 \leq A_i \leq 3000$
• $1 \leq B_i \leq 3000$
• All values in input are integers.

Input

Input is given from Standard Input in the following format:

N T
A_1 B_1
:
A_N B_N

Output

Print the maximum possible happiness Takahashi can achieve.