Bfs shotest distance

code is https://ide.codingblocks.com/s/112179
quest link is https://hack.codingblocks.com/contests/c/948/763
The program gets end when sample test cases for second queries are put.

@S19LPPP0039
The problem is providing with vertices from 1 to n while your code is working on nodes 0 to n-1. This is bound to give you a runtime error as your code will try to access array indices which will be out of bounds.

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