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: 4449 @ 4019 @ 7637

SOLUTION: 16105

PROBLEM: 8916 # 6070 # 4406 # 1732 # 434 @ 143 # 9650 @ 8419 # 4599

SOLUTION: -9413

PROBLEM: 1363 # 1880 @ 7946 # 2863

SOLUTION:
4566