N=10; %length of horizon 
k=[5,5,8,9,9,12,12,7,7,6];  %unit production cost
h=[1,2,2,1,1,2,2,1,1,2];  %unit inventory cost
d=[50,50,50,200,100,100,60,50,50,50]; %demand
M=80;  %Storage capacity
y1=30;  %initial inventory in period 1
%
%
% RESULTS
%
opcost =  6160  %Optimal Cost
%
opprod =  % Optimal Production Levels

    20
   100
     0
   200
   180
    20
    60
    50
    50
    50

opinv =  %Optimal Inventory Levels

    0
   50
    0
    0
   80
    0
    0
    0
    0
    0