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: 1785 - 7105 - 7217 - 2262 - 9687 - 8283 - 9761 - 7664

Output: 53764


Input: Consider Input: 694 + 4432 - 9053

Output: 5315


Input: Consider Input: 4470 + 7285 - 4583 + 9451 - 3236 - 3108 - 2875


Output: 1536