Floyd Warshall
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  Difficulty: Medium   Marks: 4

The problem is to find shortest distances between every pair of vertices in a given edge weighted directed Graph. The Graph is represented as Adjancency Matrix, and the Matrix denotes the weight of the edegs (if it exists) else INF (1e7).

Input:
The first line of input contains an integer T denoting the no of test cases. Then T test cases follow. The first line of each test case contains an integer V denoting the size of the adjacency matrix. The next V lines contain V space separated values of the matrix (graph). All input will be integer type.

Output:
For each test case output will be V*V space separated integers where the i-jth integer denote the shortest distance of ith vertex from jth vertex. For INT_MAX integers output INF.

Constraints:
1 <= T <= 20 
1 <= V <= 100
1 <= graph[][] <= 500

Example:
Input

2
2
0 25
INF 0
3
0 1 43
1 0 6
INF INF 0

Output
0 25
INF 0 
0 1 7
1 0 6
INF INF 0 

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

Contributor: Saksham Raj Seth
Author: saksham seth


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