data; # Pour l'exemple 1.
param N := 19;
param : DUR :=
      1     2
      2     16	
      3     9
      4     8
      5     10
      6     6
      7     2
      8     2
      9     9
      10    5
      11    3
      12    2
      13    1	
      14    7
      15    4
      16    3
      17    9
      18    1
      19    0;
set ARC := (1,2) (2,3) (2,4) (3,5) (4,6) (5,6) (4,7) (6,8) 
    (4,9) (6,9) (4,10) (6,11) (9,12) (7,13) (2,14) (4,15) 
    (14,15) (8,16) (11,16) (14,16) (12,17) (17,18) (10,19) 
    (13,19) (15,19) (16,19) (18,19);