This list gets you from knowing basic programming to being a yellow-red rated coder in CodeChef / Codeforces / TopCoder / etc.
Expected time to completion: 40-60 sessions (about 2-3 months)
How tho solve subtask2(Find the total number of such optimal lightings in the city) of Problem VOCV. help :(
Can't understand how to solve CHAIN - Strange Food Chain spoj problem :(