digraph fir1 {
    node [fontcolor=white,style=filled,color="160,60,176"];
    9 [label = imp];
    10 [label = imp];
    11 [label = add];
    12 [label = imp];
    13 [label = imp];
    14 [label = add];
    15 [label = imp];
    16 [label = imp];
    17 [label = add];
    18 [label = imp];
    19 [label = imp];
    20 [label = add];
    21 [label = imp];
    22 [label = imp];
    23 [label = add];
    24 [label = imp];
    25 [label = imp];
    26 [label = add];
    27 [label = imp];
    28 [label = imp];
    29 [label = add];
    30 [label = imp];
    31 [label = imp];
    32 [label = add];
    33 [label = mul];
    34 [label = mul];
    35 [label = mul];
    36 [label = mul];
    37 [label = mul];
    38 [label = mul];
    39 [label = mul];
    40 [label = mul];
    41 [label = add];
    42 [label = add];
    43 [label = add];
    44 [label = add];
    45 [label = add];
    46 [label = add];
    47 [label = add];
    48 [label = exp];
    9 -> 11 [name=1];
    10 -> 11 [name=2];
    11 -> 33 [name=3];
    12 -> 14 [name=4];
    13 -> 14 [name=5];
    14 -> 34 [name=6];
    15 -> 17 [name=7];
    16 -> 17 [name=8];
    17 -> 35 [name=9];
    18 -> 20 [name=10];
    19 -> 20 [name=11];
    20 -> 36 [name=12];
    21 -> 23 [name=13];
    22 -> 23 [name=14];
    23 -> 37 [name=15];
    24 -> 26 [name=16];
    25 -> 26 [name=17];
    26 -> 38 [name=18];
    27 -> 29 [name=19];
    28 -> 29 [name=20];
    29 -> 39 [name=21];
    30 -> 32 [name=22];
    31 -> 32 [name=23];
    32 -> 40 [name=24];
    33 -> 41 [name=25];
    34 -> 41 [name=26];
    35 -> 42 [name=27];
    36 -> 43 [name=28];
    37 -> 44 [name=29];
    38 -> 45 [name=30];
    39 -> 46 [name=31];
    40 -> 47 [name=32];
    41 -> 42 [name=33];
    42 -> 43 [name=34];
    43 -> 44 [name=35];
    44 -> 45 [name=36];
    45 -> 46 [name=37];
    46 -> 47 [name=38];
    47 -> 48 [name=39];
}