program randomman;
const s:array[1..22] of string=('df','bf','liste de adiacenta static','df_liste','bf_liste','quick sort','roy_floyd+drum','dijkstra','apm','puncte de articulatie','kmp','problema rucsacului','problema triunghiului','lee cu drum','bellman ford','scmax',
'grafuri implementate dinamic','bf pe grafuri implementate dinamic','subsir crescator de lungime maxima','ctc','eulerian','sortare topologica');
var i:integer;
begin
  randomize;
  i:=random(20);
  writeln('             ',s[i]);

end.