EZDIJKST - Easy Dijkstra Problem
Determine the shortest path between the specified vertices in the graph given in the input data.
Hint: You can use Dijkstra's algorithm.
Hint 2: if you're a lazy C++ programmer, you can use set and cin/cout (with sync_with_stdio(0)) - it should suffice.
first line - one integer - number of test cases
For each test case the numbers V, K (number of vertices, number of edges) are given,
Then K lines follow, each containing the following numbers separated by a single space:
ai, bi, ci
It means that the graph being described contains an edge from ai to bi,
with a weight of ci.
Below the graph description a line containing a pair of integers A, B is present.
The goal is to find the shortest path from vertex A to vertex B.
All numbers in the input data are integers in the range 0..10000.
For each test case your program should output (in a separate line) a single number C - the length of the shortest path from vertex A to vertex B. In case there is no such path, your program should output a single word "NO" (without quotes)
Input: 3 3 2 1 2 5 2 3 7 1 3 3 3 1 2 4 1 3 7 2 3 1 1 3 3 1 1 2 4 1 3 Output: 12 5 NO
done in second attempt so much easy though
AC in 7th go :)
For information, the graph has directed edges. Be careful !!
WTF is going here??? You should give a hint if it's a directed or undirected graph.
First time commenting this...AC in one go!!!
graph is directed so be careful it cost me 1 WA.
The graph is directed btw
memset doesnt work for big value.... use fill() instead or a loop.