include "disjunctive.mzn"; int: jobs; % 作业的数量 set of int: JOB = 1..jobs; int: tasks; % 每个作业的任务数量 set of int: TASK = 1..tasks; array [JOB,TASK] of int: d; % 任务持续时间 int: total = sum(i in JOB, j in TASK)(d[i,j]);% 总持续时间 int: digs = ceil(log(10.0,total)); % 输出的数值 array [JOB,TASK] of var 0..total: s; % 起始时间 var 0..total: end; % 总结束时间 constraint %% 保证任务按照顺序出现 forall(i in JOB) ( forall(j in 1..tasks-1) (s[i,j] + d[i,j] <= s[i,j+1]) /\ s[i,tasks] + d[i,tasks] <= end ); constraint %% 保证任务之间没有重叠 forall(j in TASK) ( disjunctive([s[i,j] | i in JOB], [d[i,j] | i in JOB]) ); solve minimize end; output ["end = \(end)\n"] ++ [ show_int(digs,s[i,j]) ++ " " ++ if j == tasks then "\n" else "" endif | i in JOB, j in TASK ];