Description
Lawrence and Holo were traveling merchants who went from town to town trading various goods in order to make a profit. However, Holo spent too much money on other things like clothes, shoes, oil, comb, and lots of apples! Hence, Lawrence was upset about this and told her to records all these expense. Holo can do the math without any difficulty, but she was too lazy to do it, so she ask for your help. Please design a program which can do simple addition like 2486+7414 or 1919810+114514.
Input
The first line contains a single string s, representing the mathematical expression with two numbers and an operator +.
The string only includes numbers from 0~9 and + operator which would only appears once.
The length of the string would not exceed 200 characters.
The digits of the two numbers would not exceed 100 characters, but it might be too big to store in long long.
Output
Output the answer of the mathematical expression.
Note that you do NOT need to print '\n' at the end of the output.