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: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929

Output: 6800


Input: Consider Input: 2984 # 596 # 8941 @ 4235 @ 5264 @ 351 # 3797 @ 7168 # 55

Output: 6613


Input: Consider Input: 3635 @ 3240 @ 952 # 65 # 7094


Output: 668