[skel] Update problem_cfp skeleton

skel/problem_cfp/.timelimit

@@ -0,0 +1 @@
+1

skel/problem_cfp/problem_statement/problem.en.tex

@@ -2,12 +2,13 @@
 
 %\illustration{0.3}{image.jpg}{
 %    Caption of the illustration (optional).
-%    CC BY-NC 2.0 by X on \href{https://example.com/reference-to-image}{Y}
+%    CC BY-SA 4.0 by X on \href{https://example.com/reference-to-image}{Y}
 %}
 
 % optionally define variables/limits for this problem
 \newcommand{\maxa}{123456789}
 
+% TODO: Remove this comment when you're done writing the problem statement.
 Given the area $a$ of a square, calculate its perimeter.
 
 \begin{Input}

skel/problem_cfp/problem_statement/solution.en.tex

@@ -0,0 +1,10 @@
+\begin{frame}
+    \frametitle{\problemtitle}
+    \begin{itemize}
+        % TODO: Remove this comment when you're done writing the solutions.
+        \item<+-> \textbf{Problem:} Print $4\sqrt n$ with sufficiently many digits.
+        \item<+-> Naive solution: do something stupid. $\mathcal O(2^n)$ is too slow!
+        \item<+-> Instead, just compute the answer. $\mathcal O(1)$.
+    \end{itemize}
+    % \solvestats
+\end{frame}

skel/problem_cfp/submissions/accepted/name.py3 → skel/problem_cfp/submissions/accepted/author.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
-
 import math
+
 n = float(input())
-a = 4 * math.sqrt(n)
-print(f'{a:.10f}')
+print(4 * math.sqrt(n))