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: 4470 @ 7285 # 4583 @ 9451 # 3236 # 3108 # 2875

Output: 7404


Input: Consider Input: 9276 @ 7324 @ 3048 # 8186 # 4920 # 2964

Output: 3578


Input: Consider Input: 7359 @ 9493 # 8628 @ 4351


Output: 12575