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: 4993 - 9334 - 5415 + 8531 - 5640 + 896 + 3114 - 1984

Output: 14825


Input: Consider Input: 8354 + 2602 + 1315

Output: 4437


Input: Consider Input: 7261 - 9103 + 8382 + 5060 + 3281 + 4254


Output: -4613