<｜begin▁of▁sentence｜>### Instruction:
Given an Erdős-Rényi graph with 10 vertices and 20 edges, perform a heuristic algorithm to compute the minimum vertex cover, then using the VertexCover class in igraph, retrieve and print the subgraphs corresponding to each cluster in the cover, the crossing edges, and provide a summary of the cover.
### Response:
from igraph import Graph

# Create an igraph graph
graph = Graph.Erdos_Renyi(n=10, m=20)

# Compute the minimum vertex cover using a heuristic algorithm
vertex_cover = graph.mincut().partition[1]
# Create a VertexCover instance for the graph with the result of the heuristic
cover = graph.as_cover(vertex_cover)

# Retrieve and print the subgraphs for each cluster in the cover
subgraphs = cover.subgraphs()
for i, sg in enumerate(subgraphs):
    print(f'Subgraph {i}:', sg)

# Get and print the crossing edges
crossing = cover.crossing()
print('Crossing edges:', crossing)

# Print a summary of the cover
cover.summary()
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