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.

Ex Input:
5630 - 3377 + 9205 - 4071 + 9580 - 7049

Ex Output:
1342


Ex Input:
1320 + 3923 - 1080 - 3521 - 8998 + 4479 - 2559 - 7680

Ex Output:
16756


Ex Input:
2506 + 3963 - 4139 + 3406 - 4950 - 5132

Ex Output:

9358