case 1
shelf 1 80 700
shelf 1 100 75
shelf 1 10 600
shelf 1 600 2000
shelf 1 5000 200
book Book_1 6 66
add Book_1 1
book Book_2 10 81
add Book_2 1
book Book_3 10 85
add Book_3 1
book Book_4 12 61
add Book_4 1
book Book_5 13 65
add Book_5 1
book Book_6 8 94
add Book_6 1
book Book_7 13 50
add Book_7 1
book Book_8 12 67
add Book_8 1
book Book_9 11 70
add Book_9 1
book Book_10 13 98
add Book_10 1
book Book_11 8 71
add Book_11 1
book Book_12 10 81
add Book_12 1
book Book_13 6 97
add Book_13 1
book Book_14 9 74
add Book_14 1
book Book_15 6 91
add Book_15 1
book Book_16 10 80
add Book_16 1
book Book_17 14 58
add Book_17 1
book Book_18 9 86
add Book_18 1
book Book_19 14 97
add Book_19 1
book Book_20 9 89
add Book_20 1
book Book_21 10 55
add Book_21 1
book Book_22 12 91
add Book_22 1
book Book_23 13 61
add Book_23 1
book Book_24 9 93
add Book_24 1
book Book_25 7 79
add Book_25 1
book Book_26 10 55
add Book_26 1
book Book_27 13 54
add Book_27 1
book Book_28 9 65
add Book_28 1
book Book_29 14 80
add Book_29 1
book Book_30 9 84
add Book_30 1
book Book_31 13 67
add Book_31 1
book Book_32 5 51
add Book_32 1
book Book_33 6 91
add Book_33 1
book Book_34 11 71
add Book_34 1
book Book_35 6 94
add Book_35 1
book Book_36 9 73
add Book_36 1
book Book_37 9 75
add Book_37 1
book Book_38 5 51
add Book_38 1
book Book_39 10 85
add Book_39 1
book Book_40 10 89
add Book_40 1
book Book_41 13 74
add Book_41 1
book Book_42 5 69
add Book_42 1
book Book_43 6 97
add Book_43 1
book Book_44 7 71
add Book_44 1
book Book_45 6 75
add Book_45 1
book Book_46 6 64
add Book_46 1
book Book_47 10 73
add Book_47 1
book Book_48 10 92
add Book_48 1
book Book_49 8 92
add Book_49 1
book Book_50 10 61
add Book_50 1
pcase 1