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: 8988 + 9565 + 4047 - 1723 + 7160 - 8838 + 5611 + 7126

Output: -13960

Input: Consider Input: 4533 - 9566 - 2287 + 4647 + 5056 + 6340 + 777 - 4673 + 2170

Output: 2069

Input: Consider Input: 324 + 3925 - 7501 + 1520
Output: 2380