SOLVE
LATER
Given a graph having $$N$$ vertices and $$M$$ bidirectional edges, with each edge having some length and some destruction cost. You have to increase the length of the shortest path between vertex $$1$$ and vertex $$N$$, for that you can destroy some edges. Find the minimum cost of doing it.
Input Format:
First line consists of two space separated integers denoting $$N$$ and $$M$$.
Following $$M$$ lines consists of four space separated integers $$X \; Y \; D \; C$$ denoting that there is an edge between vertex $$X$$ and $$Y$$ having length $$D$$ and destruction cost $$C$$.
Output Format:
Print the required answer.
Constraints:
$$2 \le N \le 1000$$
$$1 \le M \le 4 \times 10^5$$
$$1 \le X, Y \le N$$
$$1 \le D, C \le 1000000$$
Currently the shortest path between $$1$$ and $$4$$ is of length $$1$$, so we delete this vertex at a cost of $$8$$, so that the length of shortest path increases to $$9$$.