P1601 A+B Problem (High Precision)
Description
High-precision addition, equivalent to the A+B problem. **Do not consider negative numbers.**
Input Format
Input consists of two lines. $a,b \leq 10^{500}$.
Output Format
Output a single line representing the value of $a+b$.
Explanation/Hint
For 20% of the testdata, $0\le a,b \le10^9$.
For 40% of the testdata, $0\le a,b \le10^{18}$.
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