Исправте ошибки

const n=10;
var a:array[1..n]of integer;
i, c: integer;
s,p:real;
begin
randomize;
p:=1;
for i:=1 to n do
begin
a[i]:=random(100)-50;
write(a[i]:4);
p:=p*a[i] ;
s:=s+a[i];
end;
writeln;
writeln('P = ',p, ' S= ',s);
end.