1 программа
var b:integer;
begin
read(b);
if ((b div 100<>0) and (b div 1000=0) and (b mod 7=0)) then write ('da') else writeln ('net');
end.
2 программа
var a,b,c: integer;
begin
readln(a,b,c);
if (a>b) and (a>c) then if (b>c) then writeln(a,b,c) else writeln (a,c,b) else
if (b>a) and (b>c) then if (a>c) then writeln(b,a,c) else writeln (b,c,a) else
if (c>a) and (c>b) then if (a>b) then writeln(c,a,b) else writeln (c,b,a) ;
end.