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

Example Input: 7640 @ 3347 @ 904
Example Output: 11891

Example Input: 581 # 2278 @ 452 # 5411 # 7564 @ 8148 # 2350 # 8956 # 4877
Example Output: -22255

Example Input: 6955 @ 9662 @ 2777 # 6990 @ 3495 # 5670
Example Output:
10229

