Hello Coders!

After a long break weekly contest is back .
Link http://hackerrank.com/w11
Starting today 6th October 16:00 UTC there will be 1 challenge posted daily in increasing order of difficulty.

Penalty will be (Submit — View) time, which allows you to start late. But if you delay by 24 hours 10% score gets decayed per day. More rules can be seen here

Challenge statement will be available in English, Russian and Chinese

Contributors
Day 1 darkshadows
Day 2 Anastasko
Day 3: ddldyj237
Day 4: vlade087
Day 5: CherryTree

GL & HF