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: 2132 @ 8398 # 9269

Output: 1261


Input: Consider Input: 4100 @ 4500 @ 5166 @ 7442 @ 3258

Output: 24466


Input: Consider Input: 1765 # 7677 @ 9959 @ 5336 # 2748


Output: 6635