TASK DEFINITION: In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer
PROBLEM: 1559 # 9981 # 6881

SOLUTION: -15303

PROBLEM: 4899 # 3034 @ 3351 @ 7952 @ 4527 # 2700 # 3143 @ 3642 # 2445

SOLUTION: 13049

PROBLEM: 5761 @ 3513 # 9668 @ 6494 @ 6329

SOLUTION:
12429

