各位大虾，lingo求解最短路，能不能帮忙看下？？

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代码和路径图送上
   运行时 显示v42出错  不知道什么意思  希望

1. sets:
   
2. cities/s,v11,v12,v13,v14,v21,v22,v23,v24,v31,v32,v33,v34,v41,42,v43,v44,T/;
   
3. roads(cities,cities)/
   
4. s,v11 s,v12 s,v13 s,v14
   
5. 
   
6. v11,v21 v11,v22 v11,v23 v11,v24
   
7. v12,v21 v12,v22 v12,v23 v12,v24
   
8. v13,v21 v13,v22 v13,v23 v13,v24
   
9. v14,v21 v14,v22 v14,v23 v14,v24
   
10. 
    
11. v21,v31 v21,v32 v21,v33 v21,v34
    
12. v22,v31 v22,v32 v22,v33 v22,v34
    
13. v23,v31 v23,v32 v23,v33 v23,v34
    
14. v24,v31 v24,v32 v24,v33 v24,v34
    
15. 
    
16. v31,v41 v31,v42 v31,v43 v31,v44
    
17. v32,v41 v32,v42 v32,v43 v32,v44
    
18. v33,v41 v33,v42 v33,v43 v33,v44
    
19. v34,v41 v34,v42 v34,v43 v34,v44
    
20. 
    
21. v41,T v42,T v43,T v44,T/:w,x;
    
22. endsets
    
23. data:
    
24. w=137.52 406.42 272.64 544.04
    
25. 
    
26.   417.57 158.54 635.96 304.96
    
27.   484.47 138.04 626.36 308.16
    
28.   476.07 153.50 551.96 307.16
    
29.   467.07 155.44 552.52 274.16
    
30. 
    
31.   558.24 505.85 157.02 153.03
    
32.   633.40 436.65 155.02 154.43
    
33.   624.24 487.45 139.32 153.93
    
34.   613.84 495.70 151.12 140.03
    
35. 
    
36.   425.55 526.86 469.71 153.76
    
37.   473.25 439.26 464.61 154.96
    
38.   467.25 471.36 424.71 154.46
    
39.   460.65 476.76 454.71 142.76
    
40. 
    
41.   0 0 0 0;
    
42. enddata
    
43. n=@size(cities);
    
44. min=@sum(roads:w*x);
    
45. @for(cities(i)|i#ne#1#and#i#ne#n:@sum(roads(i,j):x(i,j))=@sum(roads(j,i):x(j,i)));
    
46. @sum(roads(i,j)|i#eq#1:x(i,j))=1;

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阳光与你同在

解决了 原来是上面42忘记加 v了  嘿嘿