1) Using the following diagram, depict two curves that roughly indicate false positives and false negatives, respectively. 2) Based on the two curves, suggest a perfect threshold for the IDS. 3) Find the accuracy and the F1-Score for the perfect IDS. \begin{tabular}{|l|l|r|} \hline Users & Intruder? & \# Sent Packets \\ \hline user1 & Intruder & 40 \\ \hline user2 & Legit & 20 \\ \hline user3 & Legit & 30 \\ \hline user4 & Intruder & 60 \\ \hline user5 & Intruder & 70 \\ \hline user6 & Legit & 10 \\ \hline user7 & Legit & 15 \\ \hline user8 & Legit & 25 \\ \hline user9 & Legit & 18 \\ \hline \end{tabular} \begin{tabular}{|l|l|r|} \hline user10 & Intruder & 80 \\ \hline user11 & Legit & 29 \\ \hline user12 & Legit & 5 \\ \hline user13 & Intruder & 65 \\ \hline user14 & Intruder & 48 \\ \hline user15 & Legit & 23 \\ \hline user16 & Intruder & 84 \\ \hline user17 & Intruder & 70 \\ \hline user18 & Legit & 22 \\ \hline user19 & Intruder & 52 \\ \hline user20 & Intruder & 41 \\ \hline \end{tabular}.