### Equation Solver

Time Limit: 1000 ms
Memory Limit: 65536 KiB

#### Problem Description

Write a program that can solve linear equations with one variable.

#### Input

The input file will contain a number of equations, each one on a separate line. All equations are strings of less than 100 characters which strictly adhere to the following grammar (given in EBNF):

Note that all numbers occuring in the input are non-negative integers, while the solution for

Although the grammar would allow to construct non-linear equations like "Equation := Expression '=' Expression Expression := Term { ('+' | '-') Term } Term := Factor { '*' Factor } Factor := Number | 'x' | '(' Expression ')' Number := Digit | Digit Number Digit := '0' | '1' | ... | '9'

*x*x=25*", we guarantee that all equations occuring in the input file will be linear in*x*. We further guarantee that all sub-expressions of an equation will be linear in*x*too. That means, there won't be test cases like*x*x-x*x+x=0*which is a linear equation but contains non-linear sub-expressions (*x*x*).Note that all numbers occuring in the input are non-negative integers, while the solution for

*x*is a real number.#### Output

For each test case, print a line saying "Equation #

*i*(where*i*is the number of the test case) and a line with one of the following answers:- If the equation has no solution, print "No solution.".
- If the equation has infinitely many solutions, print "Infinitely many solutions.".
- If the equation has exactly one solution, print "x =
*solution*" where*solution*is replaced by the appropriate real number (printed to six decimals).

#### Sample Input

x+x+x=10 4*x+2=19 3*x=3*x+1+2+3 (42-6*7)*x=2*5-10

#### Sample Output

Equation #1 x = 3.333333 Equation #2 x = 4.250000 Equation #3 No solution. Equation #4 Infinitely many solutions.