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: 7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556

Output: -2559


Input: Consider Input: 5513 @ 1221 @ 8910 @ 8422

Output: 24066


Input: Consider Input: 7121 @ 1172 # 2303 @ 7626 # 6841 # 9838 # 1323 @ 2783


Output: -1603