P8568 [JRKSJ R6] func

**This is an interactive I/O problem.** You have a linear function $f(x)=kx+b$ ($1\le x \le n-1$). This linear function satisfies that $k$ and $b$ are both integers and $k>0$. vectorwyx modified this function. Specifically, he chooses an integer $t$ ($1\le t \le n-1$), shifts the part of the function on the line $x=t$ and to its right by $1$ unit to the right, and then connects the endpoints of the two parts with a line segment, obtaining a piecewise function $g(x)$: $$ g(x)=\begin{cases} kx+b&1\le x

See “Interaction”.

See “Interaction”.

### Sample Explanation Note that the sample is only used to show the interaction rules, and it may not be logically meaningful. #### Sample #1 $f(x)=3x-2$ ($1\le x \le 4$), $t=3$. $$ g(x)=\begin{cases} 3x-2&1\le x