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: 2177 - 4714 + 9417 - 376 - 2611 + 7130 - 2152

Output: -4517


Input: Consider Input: 3112 - 4832 - 7889 - 6855 - 5294 - 5908 + 9757 - 9064

Output: 33197


Input: Consider Input: 6119 - 2571 + 9856 - 8240


Output: 7074