//Input data for Online Solver at https://www.lutanho.net/plt/lotsize.html
//The data is adapted from the article 
//Vahid Lotfi and Yong-Seok Yoon (1994): 
//An Algorithm for the Single-item Capacitated Lot-sizing Problem 
//with Concave Production and  Holding Costs
//Journal of the Operational Research Society Vol. 45, No. 8
//Periods	6	12	18	24
//CPU time (ms)	3	60	1800	72000
//I u_0 y_0 y_I
60; 0;  0;  0;
startup x_min fix var x_max demand y_min fix var y_max
    0;     0, 900, 0,  400;  213;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  155;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  182;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  199;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  188;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  247;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  173;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  200;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  208;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  180;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  199;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  159;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  179;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  185;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  224;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  176;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  184;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  214;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  156;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  233;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  217;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  198;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  163;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  237;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  246;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  205;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  233;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  196;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  215;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  169;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  216;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  172;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  223;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  229;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  218;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  231;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  185;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  154;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  154;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  191;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  161;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  240;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  155;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  209;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  171;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  248;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  235;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  242;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  160;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  243;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  192;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  232;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  196;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  191;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  159;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  202;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  171;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  207;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  216;     0,  0,  1, 9999;
    0;     0, 900, 0,  400;  244;     0,  0,  1, 9999;