digraph name_of_graph {
size="6.5,10.0"; center=true
node [color=black,fontcolor=black];
edge [arrowhead=none,color=red];
0 [label="0:21"];
1 [label="1:135"]; 1 -> 0;
2 [label="2:189"]; 2 -> 0;
3 [label="3:105"]; 3 -> 2;
4 [label="4:189"]; 4 -> 1;
5 [label="5:621"]; 5 -> 2; 5 -> 4;
6 [label="6:756"]; 6 -> 5;
7 [label="7:504"]; 7 -> 6;
8 [label="8:105"]; 8 -> 6;
9 [label="9:875"]; 9 -> 3; 9 -> 7; 9 -> 8;
10 [label="10:105"]; 10 -> 1;
11 [label="11:621"]; 11 -> 4; 11 -> 10;
12 [label="12:210"]; 12 -> 11;
13 [label="13:1024"]; 13 -> 6; 13 -> 12;
14 [label="14:504"]; 14 -> 13;
15 [label="15:378"]; 15 -> 7; 15 -> 14;
16 [label="16:168"]; 16 -> 15;
17 [label="17:210"]; 17 -> 9;
18 [label="18:91"]; 18 -> 17;
19 [label="19:665"]; 19 -> 8; 19 -> 14;
20 [label="20:875"]; 20 -> 8; 20 -> 15;
21 [label="21:210"]; 21 -> 9; 21 -> 19; 21 -> 20;
22 [label="22:168"]; 22 -> 19; 22 -> 20;
23 [label="23:189"]; 23 -> 16; 23 -> 22;
24 [label="24:189"]; 24 -> 17; 24 -> 21;
25 [label="25:225"]; 25 -> 23; 25 -> 24;
26 [label="26:91"]; 26 -> 24;
27 [label="27:91"]; 27 -> 25;
28 [label="28:27"]; 28 -> 18; 28 -> 26; 28 -> 27;
29 [label="29:27"]; 29 -> 26; 29 -> 27;
30 [label="30:7"]; 30 -> 28; 30 -> 29;
31 [label="31:1"]; 31 -> 30;
}