Can anyone please help me to understand the solution of this problem?
ZOJ: 3329: One Person Game
Solution link
→ Pay attention
→ Streams
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | maomao90 | 174 |
| 2 | awoo | 164 |
| 3 | adamant | 163 |
| 4 | TheScrasse | 159 |
| 5 | nor | 158 |
| 6 | maroonrk | 156 |
| 7 | -is-this-fft- | 151 |
| 8 | SecondThread | 147 |
| 9 | orz | 146 |
| 10 | pajenegod | 145 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: Apr/23/2024 22:28:47 (j2).
Desktop version, switch to mobile version.
Supported by
Define f(x) as the expected number of dice rolls if the current number is x. We can express f(x) in the form f(x) = k + a·f(0). Then when we get to f(0) we can use simple algebra to solve for the answer: