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: 5249 @ 1204 # 3908 # 5196 @ 1711 @ 8089 # 8419 # 2865 @ 1478

Output: -2657


Input: Consider Input: 9781 # 2797 # 2134

Output: 4850


Input: Consider Input: 8446 # 314 # 1166 # 5855 @ 722 # 2238 # 1488 # 1667


Output: -3560