In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Input: Consider Input: 6108 + 2133 + 8600

Output: -4625


Input: Consider Input: 5335 + 8307 + 4845 + 6853 - 9847 + 7289

Output: -12112


Input: Consider Input: 5252 + 752 - 4081 + 8146


Output: 435