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: 3074 @ 9793 # 6587 @ 1399

Output: 7679


Input: Consider Input: 3765 @ 8333 @ 5726

Output: 17824


Input: Consider Input: 4742 @ 6343 # 8722 # 1925 @ 3530 # 6460


Output: -2492