Given an adjacency matrix representation of a graph g having 0 based index your task is to complete the function isBipartite which returns true if the graph is a bipartite graph else returns false.

Input:
The first line of input contains an integer T denoting the no of test cases. Then T test cases follow. Each test case contains an integer v denoting the no of vertices of the graph then in the next line are v*v space separated values of the adjacency matrix representation of the graph g.

Output:
For each test case in a new line output will be 1 if the graph is bipartite else 0.

Constraints:
1<=T<=100
1<=v<=15
0<=g[][]<=1

Example(To be used only for expected output):
Input:
2
4
0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0
3
0 1 0 0 0 1 1 0 0
Output:
1
0

Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.

** For More Input/Output Examples Use 'Expected Output' option **