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: 6820 - 387 + 8290 - 9203 - 9292 + 9249 - 3079

Output: 11242


Input: Consider Input: 8602 - 1293 - 8063 - 4529 + 453 - 6407

Output: 28441


Input: Consider Input: 1001 + 3680 - 7689


Output: 5010