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Discussion of Problem 1036. Lucky Tickets

Why My Program Get Crash(ACCESS_VIOLATION) ? Help !!!
Posted by XueMao 31 Jul 2002 17:40
{$N+,s-}
Program Lucky_ticket;

Type xm=array[-50..200] of integer;
     Lion=array[0..1,-50..1000] of ^xm;

Var k,i,j,m,n,u,v,t,t1:Longint;
    q:double;
    a:Lion;
    LL:array[0..1,-100..1000] of integer;
    c:array[-100..1000] of longint;

Procedure Go(x,y:longint);
var i,j,k,L:longint;
begin
  if LL[t,x]>LL[t1,y] then L:=LL[t,x]
  else L:=LL[t1,y];
  for i:=1 to L do
  begin
    inc(a[t,x]^[i],a[t1,y]^[i]);
    if a[t,x]^[i]>9 then
    begin
      dec(a[t,x]^[i],10);
      inc(a[t,x]^[i+1]);
    end;
  end;
  if a[t,x]^[L+1]<>0 then LL[t,x]:=L+1
  else LL[t,x]:=L;
end;

Procedure Cheng(x:integer);
var i,L:longint;
begin
  fillchar(c,sizeof(c),0);
  for i:=1 to LL[t,x] do
  for j:=1 to LL[t,x] do
  inc(c[i+j-1],a[t,x]^[i]*a[t,x]^[j]);
  for i:=1 to LL[t,x]+LL[t,x] do
  begin
    inc(c[i+1],c[i] div 10);
    c[i]:=c[i] mod 10;
  end;
  if c[LL[t,x]+LL[t,x]]<>0 then L:=LL[t,x]+LL[t,x]
  else L:=LL[t,x]+LL[t,x]-1;
  for i:=L downto 1 do
  write(c[i]);
  writeln;
end;

Begin
  read(n);
  read(m);
  if (m>2*n*9)or(odd(m)) then
  begin
    writeln(0);
    exit;
  end;
  m:=m shr 1;
  for j:=0 to 1 do
  for i:=0 to m+1 do
  begin
    new(a[j,i]);
    fillchar(a[j,i]^,sizeof(a[j,i]^),0);
  end;
  for i:=0 to 9 do
  begin
    a[1,i]^[1]:=1;
    LL[1,i]:=1;
  end;
  t:=1;
  t1:=0;
  for i:=2 to n do
  begin
    t1:=t;
    t:=1-t;
    for j:=0 to m+1 do
    fillchar(a[t,j]^,sizeof(a[t,j]^),0);
    fillchar(LL[t],sizeof(LL[t]),0);
    u:=i*9;
    if m<u then u:=m;
    for j:=0 to u do
    begin
      v:=j-9;
      if v<0 then v:=0;
      for k:=v to j do
      go(j,k);
    end;
    LL[t1]:=LL[t];
  end;
  cheng(m);
End.