Alice has recently learned in her economics class that the market is said to be in equilibrium when the supply is equal to the demand.

Alice has market data for N time points in the form of two integer arrays S and D. Here, S_{i} denotes the supply at the i^{th} point of time and D_{i} denotes the demand at the i^{th} point of time, for each 1 ≤ i ≤ N.

Help Alice in finding out the number of time points at which the market was in equilibrium.

------ Input Format ------

• The first line of input will contain an integer T — the number of test cases. The description of T test cases follows.
• Each test case contains three lines of input.
• The first line of each test case contains an integer N, the length of the arrays S and D.
• The second line of each test case contains $N space-separated integers S_{1}, S_{2}, \ldots , S_{N}$.
• The third line of each test case contains $N space-separated integers D_{1}, D_{2}, \ldots , D_{N}$.

------ Output Format ------

For each test case, output the number of time points at which the market was in equilibrium.

------ Constraints ------

$1 ≤ T ≤ 10$
$1 ≤ N ≤ 100$
$1 ≤ S_{i}, D_{i} ≤ 100$ for every $1 ≤ i ≤ N$

----- Sample Input 1 ------
2
4
1 2 3 4
2 1 3 4
4
1 1 2 2
1 2 1 1
----- Sample Output 1 ------
2
1
----- explanation 1 ------
Test case $1$: For $i = 3$ and $i = 4$, we have supply equal to demand, hence the market is in equilibrium.

Test case $2$: For $i = 1$, we have supply equal to demand, hence the market is in equilibrium.

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