diff --git a/exo5.py b/exo5.py
index cd9ac48..eced6c8 100644
--- a/exo5.py
+++ b/exo5.py
@@ -1,5 +1,89 @@
+import sys
+
+
+class Vertex:
+    def __init__(self, node):
+        self.id = node
+        self.adjacent = {}
+
+    def __str__(self):
+        return str(self.id) + " adjacent: " + str([x.id for x in self.adjacent])
+
+    def add_neighbor(self, neighbor):
+        self.adjacent[neighbor] = True
+
+    def get_connections(self):
+        return self.adjacent.keys()
+
+
+class Graph:
+    def __init__(self):
+        self.vert_dict = {}
+
+    def __iter__(self):
+        return iter(self.vert_dict.values())
+
+    def __str__(self):
+        res = []
+        for vertex in self:
+            res.append(str(vertex))
+        return "\n".join(res)
+
+    def add_vertex(self, node):
+        new_vertex = Vertex(node)
+        self.vert_dict[node] = new_vertex
+        return new_vertex
+
+    def get_vertex(self, n):
+        self.vert_dict.get(n)
+
+    def add_edge(self, frm, to):
+        if frm not in self.vert_dict:
+            self.add_vertex(frm)
+        if to not in self.vert_dict:
+            self.add_vertex(to)
+
+        self.vert_dict[frm].add_neighbor(self.vert_dict[to])
+        self.vert_dict[to].add_neighbor(self.vert_dict[frm])
+
+    def get_vertices(self):
+        return self.vert_dict.keys()
+
+
 def main():
-    pass
+    lines = []
+    for line in sys.stdin:
+        lines.append(line.rstrip("\n"))
+
+    ancient_graph = Graph()
+    ancient_graph.add_edge("A", "F")
+    ancient_graph.add_edge("A", "J")
+    ancient_graph.add_edge("A", "M")
+    ancient_graph.add_edge("B", "C")
+    ancient_graph.add_edge("B", "K")
+    ancient_graph.add_edge("B", "H")
+    ancient_graph.add_edge("C", "D")
+    ancient_graph.add_edge("C", "G")
+    ancient_graph.add_edge("D", "G")
+    ancient_graph.add_edge("D", "L")
+    ancient_graph.add_edge("E", "M")
+    ancient_graph.add_edge("E", "N")
+    ancient_graph.add_edge("E", "G")
+    ancient_graph.add_edge("F", "K")
+    ancient_graph.add_edge("F", "I")
+    ancient_graph.add_edge("H", "I")
+    ancient_graph.add_edge("H", "J")
+    ancient_graph.add_edge("I", "L")
+    ancient_graph.add_edge("J", "N")
+    ancient_graph.add_edge("K", "L")
+    ancient_graph.add_edge("M", "N")
+    print(ancient_graph)
+
+    modern_graph = Graph()
+    for line in lines[1:]:
+        frm, to = line.split()
+        modern_graph.add_edge(frm, to)
+    print(modern_graph)
 
 
 if __name__ == "__main__":
diff --git a/exo5_with_networkx.py b/exo5_with_networkx.py
new file mode 100644
index 0000000..699b30d
--- /dev/null
+++ b/exo5_with_networkx.py
@@ -0,0 +1,45 @@
+import sys
+
+import networkx as nx
+from networkx.algorithms import isomorphism
+
+
+def main():
+    lines = []
+    for line in sys.stdin:
+        lines.append(line.rstrip("\n"))
+
+    ancient_graph = nx.Graph()
+    ancient_graph.add_edge("A", "F")
+    ancient_graph.add_edge("A", "J")
+    ancient_graph.add_edge("A", "M")
+    ancient_graph.add_edge("B", "C")
+    ancient_graph.add_edge("B", "K")
+    ancient_graph.add_edge("B", "H")
+    ancient_graph.add_edge("C", "D")
+    ancient_graph.add_edge("C", "G")
+    ancient_graph.add_edge("D", "G")
+    ancient_graph.add_edge("D", "L")
+    ancient_graph.add_edge("E", "M")
+    ancient_graph.add_edge("E", "N")
+    ancient_graph.add_edge("E", "G")
+    ancient_graph.add_edge("F", "K")
+    ancient_graph.add_edge("F", "I")
+    ancient_graph.add_edge("H", "I")
+    ancient_graph.add_edge("H", "J")
+    ancient_graph.add_edge("I", "L")
+    ancient_graph.add_edge("J", "N")
+    ancient_graph.add_edge("K", "L")
+    ancient_graph.add_edge("M", "N")
+
+    modern_graph = nx.Graph()
+    for line in lines[1:]:
+        frm, to = line.split()
+        modern_graph.add_edge(frm, to)
+    matcher = isomorphism.GraphMatcher(ancient_graph, modern_graph)
+    matcher.is_isomorphic()
+    print(matcher.mapping[lines[0]])
+
+
+if __name__ == "__main__":
+    main()