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: 7147 + 1234 - 7159 + 8304 - 934 + 3025 - 796 - 5291 - 2549

Output: 11313


Input: Consider Input: 7169 + 1918 - 7501 + 5160 + 9033 - 3341 + 4286

Output: -2386


Input: Consider Input: 8166 - 2091 + 3353 + 862 + 3370 + 7629 - 8532 - 9859


Output: 13434