/---------/ a doua gramada /--------/---/+71 prima gramada /--------/---/+200 a treia gramada si scapam de ce avem in plus 1000-(71+200)=729 raman doar 3 seg egale 729/3=243 (un seg) adica a doua gramada 243+71=314 prima gramada 243+200=443 a 3 gramada proba 243+314+443=1000