PROGRAM pp;

uses wincrt;

type tab=array[*..**] of integer;

var t:tab ; n,i,p,q:integer;

procedure saisie(var n,p,q:integer );

begin

repeat

writeln('donner n ');

readln (n);

until n in [2..20];

writeln('saisie p et q') ;

readln(p,q);

end;

procedure remplir (var t:tab;n:integer);

begin

randomize;

for i:= 1 to n do

begin

t[i]:=10+random(31);

write (t[i],' ');

end;

end;

function existe(x:integer;t:tab;n:integer):boolean;

begin

i:=0;

repeat i:=i+1;

until (t[i]=x)or (i>n);

if i>n then

existe:=false

else

existe:=true;

end;

procedure affichage(t:tab;n:integer);

begin

if (existe(p,t,n)=true) and (existe(q,t,n)=true) then

writeln('2')

else if ((existe(p,t,n)=true) and (existe(q,t,n)=false)) or ((existe(q,t,n)=true) and (existe(p,t,n)=false)) then

writeln('1')

else

writeln('0');

end;

begin

saisie (n,p,q);

remplir(t,n);

writeln;

affichage(t,n);

end.

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