B. Kind Anton
greedy; implementation
Once again, Boris needs the help of Anton in creating a task. This time Anton needs to solve the following problem:There are two arrays of integers \(a\) and \(b\) of length \(n\). It turned out that array \(a\) contains only elements from the set \(\{-1, 0, 1\}\).Anton can perform the following sequence of operations any number of times: Choose any pair of indexes \((i, j)\) such that \(1 \le i < j \le n\). It is possible to choose the same pair \((i, j)\) more than once. Add \(a_i\) to \(a_j\). In other words, \(j\)-th element of the array becomes equal to \(a_i + a_j\). For example, if you are given array \([1, -1, 0]\), you can transform it only to \([1, -1, -1]\), \([1, 0, 0]\) and \([1, -1, 1]\) by one operation.Anton wants to predict if it is possible to apply some number (zero or more) of these operations to the array \(a\) so that it becomes equal to array \(b\). Can you help him?
Each test contains multiple test cases. The first line contains the number of test cases \(t\) (\(1 \le t \le 10000\)). The description of the test cases follows.The first line of each test case contains a single integer \(n\) (\(1 \le n \le 10^5\)) — the length of arrays.The second line of each test case contains \(n\) integers \(a_1, a_2, \dots, a_n\) (\(-1 \le a_i \le 1\)) — elements of array \(a\). There can be duplicates among elements.The third line of each test case contains \(n\) integers \(b_1, b_2, \dots, b_n\) (\(-10^9 \le b_i \le 10^9\)) — elements of array \(b\). There can be duplicates among elements.It is guaranteed that the sum of \(n\) over all test cases doesn't exceed \(10^5\).
For each test case, output one line containing ""YES"" if it's possible to make arrays \(a\) and \(b\) equal by performing the described operations, or ""NO"" if it's impossible.You can print each letter in any case (upper or lower).
In the first test-case we can choose \((i, j)=(2, 3)\) twice and after that choose \((i, j)=(1, 2)\) twice too. These operations will transform \([1, -1, 0] \to [1, -1, -2] \to [1, 1, -2]\)In the second test case we can't make equal numbers on the second position.In the third test case we can choose \((i, j)=(1, 2)\) \(41\) times. The same about the fourth test case.In the last lest case, it is impossible to make array \(a\) equal to the array \(b\).