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

Ex Input:
3351 @ 1445 @ 5875 # 1267 # 4225 @ 4098 @ 3552

Ex Output:
12829


Ex Input:
7376 @ 9212 @ 1713 # 9993

Ex Output:
8308


Ex Input:
9628 @ 4074 # 5360 # 1772 @ 5492 @ 6563 @ 2530 @ 7863 # 270

Ex Output:

28748