AMPL語法錯誤

Question

我主義學習使用AMPL和我寫的下一個腳本

# Problema 2 
    set P #plantas 
    set PI #puntos intermedios 
    set CD # centros de distribucion 
    set O # origenes 
    set D # destinos 

    param coste {i in O , j in D} 
    param produc {k in P} 
    param capac {l in PI} 
    param requiere {m in CD} 

    var cantidad{O,D}>==0; 

    check: sum{k in P} produc[k] <= sum{m in CD} requiere[m]; 

    minimize costo_transporte: sum{i in O, j in D} coste[i,j]*cantidad[i,j]; 

    subject to restriccion_produccion{k in P}: 
     sum{j in D}cantidad[k,j]<=produc[k]; 

    subject to restriccion_intermedio_entrada{l in PI}: 
     sum{i in O}cantidad[i,l]<=capac[l]; 

    subject to resctriccion_intermedio_salida{l in PI}: 
     sum{i in O}cantidad[i,j] - sum{j in D}cantidad[l,j]>=0; 

    subject to restriccion_demanda{m in CD}: 
     sum{i in O}cantidad[i,m]=requiere[m]; 

下一個數據文件

set P:= Rancagua SanPablo Bogota; 
set PI:= Lima Mendoza; 
set CD:= Santiago RiodeJaneiro Quito Caracas; 
set O:= Rancagua SanPablo Bogota Santiago Lima Mendoza; 
set D:= Santiago RiodeJaneiro Quito Caracas Lima Mendoza; 

param coste: 
      Santiago RiodeJaneiro Quito Caracas Lima Mendoza:= 
Rancagua  3  20  30  30  10  6 
SanPablo  15  5  35  40  20  12 
Bogota   45  25  10  12  25  30 
Santiago  0  15  30  48  12  10 
Lima   12  22  8  30  0  15 
Mendoza   10  15  12  35  15  0; 

param produc:= 
Rancagua 300 
SanPablo 250 
Bogota  200; 

param capac:= 
Lima 150 
Mendoza 180; 

param requiere:= 
Santiago  120 
RiodeJaneiro 300 
Quito   80 
Caracas   200; 

但是當我責成國防部文件，AMPL打印

ampl：model'C：\ Users \ Laura \ Desktop \ Monserrat \ P2 \ problema2.mod';

C：\用戶\勞拉\桌面\蒙塞拉特\ P2 \ problema2.mod，3號線（偏移30）： 語法錯誤

我審查的代碼，但我不明白是什麼錯誤。 請！幫我。

Answer 1

您還必須以分號;結束該行，以便定義集合和參數，而不僅僅是變量和方程式。