What is the minimum number of steps in order to get from x to y? The length of the first and the last step must be 1.
Input consists of a line containing n, the number of test cases. For each test case, a line follows with two integers: 0 <= x <= y < 2^31. For each test case, print a line giving the minimum number of steps to get from x to y.
3 45 48 45 49 45 50
3 3 4