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.

Q: 2226 - 7329 - 3547

A: 13102
****
Q: 4274 - 4385 - 2316 - 7783

A: 18758
****
Q: 8407 - 5204 + 8451 - 6859 + 8049 + 3155

A:
815
****