C. WTF?time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputHAII HAS A TUXGIMMEH TUXI HAS A FOO ITS 0I HAS A BAR ITS 0I HAS A BAZ ITS 0I HAS A QUZ ITS 1TUX IS NOW A NUMBRIM IN YR LOOP NERFIN YR TUX TIL BOTH SAEM TUX AN 0I HAS A PURGIMMEH PURPUR IS NOW A NUMBRFOO R SUM OF FOO AN PURBAR R SUM OF BAR AN 1BOTH SAEM BIGGR OF PRODUKT OF FOO AN QUZ AN PRODUKT OF BAR BAZ AN PRODUKT OF FOO AN QUZO RLY?YA RLYBAZ R FOOQUZ R BAROICIM OUTTA YR LOOPBAZ IS NOW A NUMBARVISIBLE SMOOSH QUOSHUNT OF BAZ QUZKTHXBYEInputThe input contains between 1 and 10 lines, i-th line contains an integer number xi (0 ≤ xi ≤ 9).OutputOutput a single real number. The answer is considered to be correct if its absolute or relative error does not exceed 10 - 4.ExamplesInput3011Output0.666667
Input3011
Output0.666667
['*special problem', 'graph matchings', 'implementation', 'trees', '*1700']