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: 6884 @ 145 # 2208 # 5356 # 3578 @ 606

Output: -3507


Input: Consider Input: 634 # 6766 # 1458 # 4376 @ 9425

Output: -2541


Input: Consider Input: 1943 @ 9616 # 657 # 8238 @ 5965 @ 6305 # 1044 # 9908


Output: 3982