如下数据：

最大长度 = 6000;
切口长度 = 20;
需要长度 = {525, 616, 800, 830, 868, 881, 885, 900, 911, 917, 993, 995,
   1049, 1050, 1058, 1101, 1161, 1182, 1200, 1290, 1307, 1323, 1449,
   1471, 1472, 1476, 1480, 1523, 1552, 1554, 1572, 1574, 1608, 1620,
   1669, 1670, 1734, 1994, 2191, 2390, 2531};
需要数量 = {76, 8, 12, 4, 4, 4, 4, 8, 8, 4, 8, 4, 8, 4, 8, 8, 8, 8, 8, 3, 8,
    8, 8, 8, 2, 2, 2, 8, 8, 8, 8, 8, 4, 4, 4, 4, 8, 2, 8, 1, 2};