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: 6245 + 6705 - 5181 + 7350 - 5051 - 8984 - 476 + 3773

Output: 8109


Input: Consider Input: 1163 - 3809 + 5176 - 2533 + 4885 - 8890 - 506 + 5874

Output: 966


Input: Consider Input: 4059 + 8956 - 3593 + 8062 + 8753


Output: -18119