A Simple Approximation

When A is far greater than B. ###Input: First line contains an integer T denoting the number of test cases. Each test case consists of two integer A and B. ###Output: For each test case, output a single line consisting of an integer. ###Constraints - $1 \leq T \leq 100$ - $1 \leq A \leq 10^{18}$ - $0 \leq B \leq 50$ ###Sample Input: ``` 2 1 1 1 0 ``` ###Sample Output: ``` 0 1 ```