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: 5856 - 8885 - 8510 + 7879 + 2100

Output: 13272


Input: Consider Input: 9616 - 8145 + 562 + 3160 - 8906 - 360 + 9291 + 7609 + 460

Output: 5945


Input: Consider Input: 8622 - 462 + 9881 + 5828 + 871 - 8265


Output: 769