B. Expressiontime limit per test2 secondsmemory limit per test64 megabytesinputstandard inputoutputstandard outputYou are given a line «n#m», where «n» and «m» are digits, and «#» is a sign «+» or «-». Print the value of the given expression.InputThe only given line has a string in form «n#m», where «n» and «m» are digits (from 0 to 9), and «#» is a sign «+» or «-».OutputPrint the value of the given expression.ExamplesInput1-5Output-4
Input1-5
Output-4
['*special problem', 'expression parsing', '*1500']