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: 938 + 566 + 5270 + 5634 - 7451 - 114

Output: -2967


Input: Consider Input: 3229 + 3176 - 8009 + 6079 - 8090 + 5706 - 3416

Output: 7783


Input: Consider Input: 8523 - 6880 + 4515 - 9877 - 442 + 5709 + 1819 - 7591


Output: 21270