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    EXITCOde 215 w bgger numbers while searching for LCM


    Hello,
    I have a problem w buffer overflowing
    I have to (logn story short (there is a huge story line behind this problem in instructions w timetravelign etc. ...)) find the least common multiplier but when I insert bigger numbers it will exit w exitcode 215 (whcih I read its an overflow issue)

    Code:
    program VyrocnyPles;
    var I,PocetUloh,PocetProm,PrvyClen,DruhyClen,Clen1,Clen2,Vysledok,J:Longint;
    begin
     readln(PocetUloh);
       while PocetUloh<>0 do
         begin
           readln(PocetProm);
            for I:=2 to PocetProm do
             begin
               if I=2 then
                begin
                 read(PrvyClen, DruhyClen);
                 Clen1:=PrvyClen;
                 Clen2:=DruhyClen;
                 repeat
                   if PrvyClen>DruhyClen then PrvyClen:=PrvyClen - DruhyClen;
                   if PrvyClen<DruhyClen then DruhyClen:= DruhyClen - PrvyClen;
                 until PrvyClen=DruhyClen;
    
                   Vysledok:= Clen1 * (Clen2 div PrvyClen);
                end;
    
    
                If I>2 then
                  begin
                    read(PrvyClen);
                    Clen1:=Vysledok;
                    Clen2:=PrvyClen;
                    repeat
                     if PrvyClen>Vysledok then PrvyClen:=PrvyClen - Vysledok;
                     if PrvyClen<Vysledok then Vysledok:= Vysledok - PrvyClen;
                    until PrvyClen=Vysledok;
    
    
                     Vysledok:= Clen1 * (Clen2 div PrvyClen);
                  end;
             end;
             writeln(Vysledok);
    
          PocetUloh:=PocetUloh - 1;
          end;
    
    readln;
    end.
    I jsut realized that I was giving a slvoak names to my variables so that may be a problem for u guys
    Vysledok= Solution
    Clen= Unit
    PocetUloh (no. of assigments)


    Well, on input I am given
    in first row a no of assigments 1<n<10k
    2nd row is number of people (numebrs that I will have to find the LCM)1<s<50k
    3rd row are the numbers 1<r<10k
    4th row is the same as 2nd one and so on


    I am using an Euclyd alghorhytm to find the greatest common dividor and I divide 2nd unit with it and then I multiply it with the first unit and it will find me the least common multiplier for 2 numbers, then I will remember the soultion of that and then Solution= Unit 1 and I repeat the process

    All works fien w small numbers, w I addd bigger numebrs it fails


    Any advise? How can I overcome this without learning a new language?
    Thnx guys
  2. #2
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    Can you give some specific examples of inputs that fail?
    sub{*{$::{$_}}{CODE}==$_[0]&& print for(%:: )}->(\&Meh);
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    123 234 345 456 567
    Exitcode
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    Yep, it looks like that result will exceed the size of a 32-bit Longint. You can check if your Pascal compiler supports a 64-bit data type. Otherwise you will need to find a big-number library.
    sub{*{$::{$_}}{CODE}==$_[0]&& print for(%:: )}->(\&Meh);
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    Yea
    but the funny thing is that libraries are forbidden from the university And yea, I thought the same that some numbers will be just too high for long int

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