\frac{ x^3 \left( 100 - x \right) }{50}, & \text{if } x \leq 50 \\
\frac{ x^3 \left( 150 - x \right) }{100}, & \text{if } 50 < x \leq 68 \\
\frac{ x^3 \left( 1274 + (x \bmod 3)^2 - 9 (x \bmod 3) - 20 \left\lfloor \frac{x}{3} \right\rfloor \right) }{1000}, & \text{if } 68 < x \leq 98 \\
\frac{ x^3 \left( 160 - x \right) }{100}, & \text{if } x > 98 \\
\end{cases}"
\frac{ x^3 \left( 100 - x \right) }{50}, & \text{if } x \leq 50 \\
\frac{ x^3 \left( 150 - x \right) }{100}, & \text{if } 50 < x \leq 68 \\
\frac{ x^3 \left( 1274 + (x \bmod 3)^2 - 9 (x \bmod 3) - 20 \left\lfloor \frac{x}{3} \right\rfloor \right) }{1000}, & \text{if } 68 < x \leq 98 \\
\frac{ x^3 \left( 160 - x \right) }{100}, & \text{if } x > 98 \\
\end{cases}"