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: 2027 # 965 # 9916 @ 7199 @ 844 @ 9780

Output: 8969


Input: Consider Input: 1718 # 8860 # 9652

Output: -16794


Input: Consider Input: 1614 # 4521 @ 7508 # 7726 @ 6176 @ 8975 # 693


Output: 11333