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: 7165 @ 3630 @ 9021 # 4140 @ 319

Output: 15995


Input: Consider Input: 2405 @ 2160 @ 394 # 8936 # 2551 @ 5734 @ 5167

Output: 4373


Input: Consider Input: 1341 @ 633 @ 9071


Output: 11045