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: 5355 + 1451 - 3895 + 6213 + 743

Output: 843

Input: Consider Input: 4284 - 8233 + 2781 - 2769 - 5560 + 635 - 1706 + 1965 + 6794

Output: 10377

Input: Consider Input: 1712 + 3759 + 2068 + 8986 - 5147 - 305 + 5948 + 6463 - 3746
Output: -16314