Array
(
    [0] => 20 + (1 - 13)
    [1] => 8
    [2] => 5
    [3] => 24
    [4] => 10
    [5] => 28
    [6] => 3
    [7] => 19
    [8] => 9
    [9] => 49
    [10] => 4
    [11] => 35
    [12] => 30
    [13] => 1
    [14] => 34
    [15] => 18
    [16] => 47
    [17] => 12
    [18] => 14
    [19] => 11
    [20] => 40
    [21] => 48
    [22] => 26
    [23] => 32
    [24] => 39
    [25] => 37
    [26] => 43
    [27] => 6
    [28] => 45
    [29] => 41
    [30] => 13
    [31] => 29
    [32] => 25
    [33] => 50
    [34] => 46
    [35] => 31
    [36] => 21
    [37] => 15
    [38] => 23
    [39] => 44
    [40] => 20
    [41] => 22
    [42] => 42
    [43] => 0
    [44] => 38
    [45] => 2
    [46] => 16
    [47] => 36
    [48] => 33
    [49] => 7
    [50] => 27
    [51] => 17
)