int[][] ReadBacktraceTable(BinaryReader br)
{
int sz = br.ReadInt32 ();
int [][] t = new int [sz] [];
for (int i = 0; i < sz; i ++) {
int szz = br.ReadInt32 ();
t [i] = new int [szz];
for (int j = 0; j < BacktraceSize; j ++) {
int n = br.ReadInt32 ();
if (j < szz)
t [i] [j] = n;
}
}
return t;
}