      
                  
     90                                                                                                                                                                                                                                                                                                                                                         1.                                                    2.                                      3.                                                                                                                                            90                                                                          2000                                                                                                          1.                                                                             2.                        3.                           4.              5.                      6.                                     7.                                         8.                                                               10    250          1.                         5  10    2.                                                          3        30           3.                3        30            4.                                                      3        30           5.    15  20                  8        80           6.                                         8        80            7.                  10        100           8.               10        5  10       5  10                30                                                                                                                                                                                                                                 30   2  5                                                                             