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: 5292 + 3623 + 7450

Output: -5781


Input: Consider Input: 5986 + 9293 + 3288 - 1791 + 6613 + 8185 - 7053

Output: -12549


Input: Consider Input: 9288 + 8357 + 7507


Output: -6576