TASK DEFINITION: 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.
PROBLEM: 7533 + 2213 - 7566 + 455 - 6321 - 2480 + 1023 + 2407

SOLUTION: 17802

PROBLEM: 240 - 438 + 497 - 5901 - 1960 + 4782 + 6400 - 4055

SOLUTION: 915

PROBLEM: 3135 + 1615 - 2652 - 3536

SOLUTION:
7708