ENG  RUSTimus Online Judge
Online Judge
Problems
Authors
Online contests
About Online Judge
Frequently asked questions
Site news
Webboard
Links
Problem set
Submit solution
Judge status
Guide
Register
Update your info
Authors ranklist
Current contest
Scheduled contests
Past contests
Rules
back to board

Discussion of Problem 1208. Legendary Teams Contest

Why my program got CRASH(ACCESS violat...)?
Posted by lyj_george 28 Jun 2002 18:26
MY PROGRAM:
var
  i , k , ppos: byte;
  dy : byte;
  name : array [1..100] of string;
  o : array [1..20,1..3] of byte;
  cann : array [1..100] of boolean;
  max : byte;
  e : boolean;
  now , pp , j , zz : byte;
  s , cc: string;
procedure init;
begin
  for i := 1 to 100 do cann[i] := true;
  dy := 0;
  now := 0;
  max := 0;
  readln(k);
  for i := 1 to k do begin
    readln(s);
    zz := 0;
    ppos := 1;
    while ppos<>0 do begin
      inc(zz);
      ppos := pos(' ',s);
      if ppos <> 0 then begin
      cc := copy(s,1,ppos-1);
      e := true;
      delete(s,1,ppos);
      while s[1] = ' ' do delete(s,1,1);
      end else cc := s;
      for j := 1 to dy do
        if name[j] = cc then begin
           o[i,zz] := j;
           e := false;
           break;
        end;
      if e then begin
        inc(dy);
        name[dy] := cc;
        o[i,zz] := dy;
      end;
    end;
  end;
end;

procedure sub(x : byte);
var
  jj : byte;
begin
  if now + 3 * (i - x + 1) < max then exit;
  if x = i+1 then begin
    if now > max then max := now;
    exit;
  end;
  for jj := 0 to 1 do
    if jj = 0 then sub(x+1) else
    if cann[o[x,1]] and cann[o[x,2]] and cann[o[x,3]] then begin
      cann[o[x,1]] := false;
      cann[o[x,2]] := false;
      cann[o[x,3]] := false;
      inc(now);
      sub(x+1);
      dec(now);
      cann[o[x,1]] := true;
      cann[o[x,2]] := true;
      cann[o[x,3]] := true;
    end;
end;
procedure out;
begin
  writeln(max);
end;
begin
  init;
  sub(1);
  out;
end.