Vasya phone book record telephone number friend each friend phone numbersvasya decided organize information phone number friend you give n string entry Vasyas phone book each entry start friend then follow number phone number current entry phone number it possible identical phone record recordvasya believe phone number suffix phone number b number b end number write Vasya phone number person record city code take accountthe task print organize information phone number Vasyas friend it possible different people number if person number x y x suffix y y end x should not print number x if number friend Vasyas phone book record time format necessary account exactly onceread example understand statement format output well