Map, version 3, a weighted lattice or DAG

A B 7
A C 3
A D 8
A J 13
B E 4
B F 4
C G 4
C H 3
C I 5
D J 4
E K 3
F L 4
G L 3
G M 3
H N 6
J N 4
J O 3
J P 5
K L 5
O Q 2
Q M 10