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: 9930 # 7864 @ 6797 # 6092 @ 1146 @ 1388 # 8545 # 9163

Output: -12403


Input: Consider Input: 2569 # 3660 # 2044 @ 3564 # 7082 @ 4306 @ 254 @ 4425

Output: 2332


Input: Consider Input: 1516 # 4681 # 225 # 3393 @ 1212 @ 367


Output: -5204