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Discussion of Problem 1032. Find a Multiple

why I got WA? 3q
Posted by noname 2 Aug 2002 22:24
program find_a_multiple;

const maxn=1000;

var n:integer;
    a:array[1..maxn] of integer;
    s:array[0..maxn] of integer;
    c:array[1..maxn,0..2] of integer;

procedure init;
  var i:integer;
  begin
    readln(n);
    for i:=1 to n do readln(a[i]);
  end;

procedure out(i,j:integer);
  var k:integer;
  begin
    for k:=i to j do write(a[k],' ');
    writeln;
    halt;
  end;

procedure work;
  var i:integer;
  begin
    fillchar(s,sizeof(s),0);
    for i:=1 to n do s[i]:=(s[i-1]+a[i]) mod n ;

    fillchar(c,sizeof(c),0);
    for i:=1 to n do
      if s[i]=0 then out(1,i)
                else begin
                       inc(c[s[i],0]); c[s[i], c[s[i],0]]:=i;
                       if c[s[i],0]=2 then out(c[s[i],1]+1, c[s
[i],2]);
                     end;
  end;

begin
  init;
  work;
end.