dimbleby

int: n = 4;                 % number of gangs
set of int: Gang = 1..n;
array[Gang] of int: m = [3, 2, 2, 3];  % size of each gang
int: t = sum(m);
set of int: Time = 1..t;
set of int: Student = 1..t;

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array[Student] of var Time: interview;    % at what time do we see a given student?