Cod sursa(job #229370)
| Utilizator |  Antoanela Siminiuc antoanela |
Data | 9 decembrie 2008 23:09:58 |
|---|---|---|---|
| Problema | Grigo | Scor | 10 |
| Compilator | fpc | Status | done |
| Runda | Arhiva de probleme | Marime | 0.35 kb |
var f,g:Text;
a:array[0..100000]of shortint;
n,m,i,x,c:longint;
begin
assign(f,'grigo.in');
assign(g,'grigo.out');
reset(f);
rewrite(g);
read(f,n,m);
for i:=1 to m do
begin
read(f,x);
a[x]:=1;
end;
c:=1;
for i:=2 to n do
begin
if (a[i]=0)then
c:=c*(i-1);
end;
write(g,c);
close(f);
close(g);
end.
