,
is the greatest integer less than or equal to 
is the fractional part of 
between 
and 
satisfy 
?
has two roots 
and 
in which 
.
,
is 
.
with a radius of 
.![\begin{align*}
(a+bi)\cdot(a-bi) +[(a+bi)+(a-bi)] =a^2+b^2+2a.
\end{align*}](http://latex.artofproblemsolving.com/4/0/9/409b0aed187f4f2cbc8e3f204f8b5fac9bcb44b0.png)
and 
.
with radius 
Y by PikaPika999
There are 18 teams in a football league. Each team plays against every other team twice in a season—once at home and once away. A win gives 3 points, a draw gives 1 point, and a loss gives 0 points. One team became the champion by earning more points than every other team. What is the minimum number of points this team could have?
