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

Input: Consider Input: 5175 # 1386 # 5328 # 898 @ 5361 # 376 @ 1286 @ 861

Output: 4695


Input: Consider Input: 9007 @ 6876 # 2672 # 3947 @ 6822 @ 806 @ 4508 @ 5112

Output: 26512


Input: Consider Input: 8458 @ 2624 # 669 @ 7657 # 2131


Output: 15939