Problems
Multiplying polynomials
Multiplying polynomials
We introduce a symbolic form of two polynomials in x with integer coefficients. Output of the product in descending order of degrees - also in a symbolic form.
The degree of initial polynomials are not over10, the coefficients of initial polynomials modulo no more than104.
Input
The two lines are polynomials.
Output
In a single line shows a polynomial.
Input example #1
0 0
Output example #1
0
Input example #2
x+1 x-1
Output example #2
x^2-1