Linear Expression

Time limit1sMemory limit1024 MB

Summary

Given integers A and B, the task prints the linear expression Ax+B in standard form, dropping zero terms and coefficients of 1.

Level: Easy1 of 10
Topics: Implementation, Math
Solved: No attempts yet

Problem

Mathematics has standard forms for expression types that appear often. For example, a polynomial in one variable is written as $A_nx^n \oplus A_{n-1}x^{n-1} \oplus \cdots \oplus A_0$ , where each $\oplus$ is either a plus or a minus sign. The terms are ordered by decreasing power of the variable, and unnecessary terms, coefficients, and operator signs are left out. Write a program that takes two integers $A$ and $B$ and prints the standard form of the linear expression $Ax+B$ .

Input

The only line contains two integers $A$ and $B$ ( $-1000 \le A \le 1000$ , $-1000 \le B \le 1000$ ).

Output

Print the standard form of $Ax + B$ on a single line without spaces.

Examples3

Example 1
Input
```
3 0
```
Expected output
```
3x
```
Example 2
Input
```
1 -7
```
Expected output
```
x-7
```
Example 3
Input
```
-3 3
```
Expected output
```
-3x+3
```