In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Input: Consider Input: 7208 + 2074 + 2796 - 8783

Output: 11121


Input: Consider Input: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290

Output: -3369


Input: Consider Input: 3700 - 1039 - 2296 - 7758 + 2215 + 2965 + 504 - 9645 + 8483


Output: 10271