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

Output: 10377


Input: Consider Input: 1626 + 448 + 6034

Output: -4856


Input: Consider Input: 1132 + 1118 - 7795 + 4012 - 7247


Output: 11044