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: 5462 - 3916 + 9462 - 8867 - 7357

Output: 16140


Input: Consider Input: 3664 - 184 - 3835 + 2124 - 1567 - 8341 - 3628 - 8279

Output: 27374


Input: Consider Input: 942 + 6119 - 6081 + 6063 - 6066 - 6617 + 6038 - 3205


Output: 4691