Cod sursa(job #117009)
Utilizator | Silviu-Ionut Ganceanu silviug | Data | 20 decembrie 2007 10:25:04 |
---|---|---|---|
Problema | Tije | Scor | Ascuns |
Compilator | fpc | Status | done |
Runda | Marime | 0.65 kb |
var f1,f2:text;
i,n:longint;
procedure mutare(x:longint);
var i,j:longint;
begin
for i:=n downto x+1 do
writeln(f2,x,' ',i);
for i:=1 to n-1 do
writeln(f2,n+1,' ',x);
for i:=n downto x+1 do
for j:=1 to x do
writeln(f2,i,' ',i+1);
if x<n then
mutare(x+1);
end;
begin
assign(f1,'tije.in');
reset(f1);
assign(f2,'tije.out');
rewrite(f2);
read(f1,n);
for i:=n downto 2 do
writeln(f2,i,' ',n+1);
mutare(1);
close(f1);
close(f2);
end.