Grass Field
Description
There is a field of size $2 \times 2$. Each cell of this field can either contain grass or be empty. The value $a_{i, j}$ is $1$ if the cell $(i, j)$ contains grass, or $0$ otherwise.
In one move, you can choose one row and one column and cut all the grass in this row and this column. In other words, you choose the row $x$ and the column $y$, then you cut the grass in all cells $a_{x, i}$ and all cells $a_{i, y}$ for all $i$ from $1$ to $2$. After you cut the grass from a cell, it becomes empty (i. e. its value is replaced by $0$).
Your task is to find the minimum number of moves required to cut the grass in all non-empty cells of the field (i. e. make all $a_{i, j}$ zeros).
You have to answer $t$ independent test cases.
The first line of the input contains one integer $t$ ($1 \le t \le 16$) — the number of test cases. Then $t$ test cases follow.
The test case consists of two lines, each of these lines contains two integers. The $j$-th integer in the $i$-th row is $a_{i, j}$. If $a_{i, j} = 0$ then the cell $(i, j)$ is empty, and if $a_{i, j} = 1$ the cell $(i, j)$ contains grass.
For each test case, print one integer — the minimum number of moves required to cut the grass in all non-empty cells of the field (i. e. make all $a_{i, j}$ zeros) in the corresponding test case.
Input
The first line of the input contains one integer $t$ ($1 \le t \le 16$) — the number of test cases. Then $t$ test cases follow.
The test case consists of two lines, each of these lines contains two integers. The $j$-th integer in the $i$-th row is $a_{i, j}$. If $a_{i, j} = 0$ then the cell $(i, j)$ is empty, and if $a_{i, j} = 1$ the cell $(i, j)$ contains grass.
Output
For each test case, print one integer — the minimum number of moves required to cut the grass in all non-empty cells of the field (i. e. make all $a_{i, j}$ zeros) in the corresponding test case.
Samples
3
0 0
0 0
1 0
0 1
1 1
1 1
0
1
2