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Vom considera un graf conex, neorientat, cu $N$ varfuri si $M$ muchii. Fie $D(i, j)$ distanta minima dintre varfurile $i$ si $j$. Prin diametrul grafului vom defini valoarea $Max { D(i,j) (1 &le; i < j &le; N) }$.
h2. Cerinta

h2. Exemplu

table(example). |_. apdm.in |_. apdm.out |_. Explicatie |

table(example). |_. apdm.in |_. apdm.out |

| 8 13
1 2
1 5

5 7
6 7
6 8

| 4
| In desen observam colorate cu verde muchiile unui arbore partial de diametru 4, acestea sunt: (1, 5), (2, 4), (3, 4), (4, 5), (4, 6), (5, 7), (6, 8)
!http://infoarena.ro/task/12perm?action=download&file=apdm.gif! |

| 4 |
 
h3. Explicatie
 
In desen observam colorate cu verde muchiile unui arbore partial de diametru 4, acestea sunt: (1, 5), (2, 4), (3, 4), (4, 5), (4, 6), (5, 7), (6, 8)
 
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