Hello,
I have a variable "x{c in C, p in P, r in R}, binary" that holds 1
if course c is taught in room s at period p and 0 otherwise.
The param "sc{s in S, c in C}" holds 1 if student s attend the course
c and 0 otherwise.
I need to create other variable "sp{s in S, p in P}" that will be a
function of x. This variable will hold 1 if student s have a course at
period p and 0 otherwise.
I wrote this var statement:
var sp{s in S, p in P} = sum{c in C} (sc[s,c] * sum{r in R} x[c,p,r]);
but i get this error: expression following = has invalid type.
how can i correct this?
Thanks in advance
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