Элементы теории алгоритмов - 219 стр.

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§4 NP
a
t
a
s
L
ts
k L
s
1
s
2
L
s
2
s
3
L
s
k1
s
k
s
1
s
k
1 k L
s
t
s
t+1
a
s
t
a
s
t+1
a
p
a
s
t
[v, e, 0] e
v [v, f, 0]
[v, f, 1] f v [u, f, 0] [u, f, 1]
f v u a
s
t+1
[v, g, 1] g v
L
s
t
s
t+1
a
s
t
a
s
t+1
v v
s
t
v
s
1
v
s
k
G
e G v u
[v, e, 0] L
s
t
s
t+1
v u v
s
1
v
s
k
NP
G =(
V,
E)
G =(V,E)
G =(
V,
E)
G =(V,E)
V =
V ×{0, 1, 2}
E G (v, 0)
(v, 1) (v, 1) (v, 2) E
(v, 2) (u, 0)
G =(
V,
E) v u
G
(v, 0)
G =(
V,
E)
G =(
V,
E)
G
v u
(v, 0), (v, 1), (v,2), (u, 0).