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: 3097 + 17 - 8842 + 4949 + 8377 + 425 - 7128 + 6500

Output: -1201

Input: Consider Input: 2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178

Output: -28524

Input: Consider Input: 7357 - 6761 - 9110 - 3950 - 6128 - 1304 + 5910 + 3994
Output: 24706