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: 2900 # 2740 # 1706 @ 6629

Output: 5083


Input: Consider Input: 9442 @ 3280 @ 5266 @ 440 @ 7791


Output: 26219