human
Solve the following python programming problem given the following code:
# Import the graph library NetworkX
import networkx as nx

# Build a Network using a precomputed set of pair of coprimes numbers
def BuildGridNetwork(N, Coprimes):
    def ID(x,y):
        return x*N+y

    G = nx.DiGraph()

    for i in range(N):
        for j in range(N):
            G.add_node(ID(i,j), pos=(i,j))
            
    for i in range(N):
        for j in range(N):
            for (v, w) in Coprimes:
                if i + v >= 0 and i + v < N and j + w >= 0 and j + w < N:
                    G.add_edge(ID(i,j), ID(i+v, j+w), 
                               weight=sqrt(pow(v, 2) + pow(w, 2)))
    
    return G
Given the above code, generate some markdown instructions for it.
assistant
#Here is the Python program you requested.

Using the set of coprimes pair, we can build our small flow network as follows.