input courbescp;
beginfig(1);
  depart((0,0),(15,7),(0.5,1),0.5,0.5);
  grille(0.5);
  axes;
  graduationx(btex 1 etex);
  graduationy(btex 2 etex);
  legendex(btex Notes etex);
  legendey(btex Effectifs etex);
endfig;
end