Plus or Times

Adrian is playing a game. When the game starts, Adrian will be given $P$ points as his initial points. The game consists of $N$ rounds, numbered from $1$ to $N$. During round $i$, Adrian has two options. Each option can be one of the following types:

• + $c$ ($-1000 ≤ c ≤ 1000$) which will add his current points by $c$, or
• x $c$ ($-2 ≤ c ≤ 2$) which will multiply his current points by $c$.

Adrian wants to maximize his points at the end of the game. Help Adrian to determine the maximum points he can achieve after completing all $N$ rounds!

Input begins with two integers $N$ $P$ ($1 ≤ N ≤ 50$; $-1000 ≤ P ≤ 1000$) representing the number of rounds and the initial points during the game, respectively. Each of the next $N$ lines contains the two options in each round separated by a space. Each option is given in the format $T$ $c$ ($T ∈ \{$+, x$\}$; $-1000 ≤ c ≤ 1000$ if $T = $+, or $-2 ≤ c ≤ 2$ if $T = $x).

Output an integer in a single line representing the maximum points Adrian can achieve at the end of the game.