🌍 中文

🚀 Interstellar Railway: Arithmetic Sequence

Total Score: 0
⏱️ 00:00

Build Your Interstellar Route!

👉 Railway Guide:
🚅 【Interval Myth】: To calculate the mileage of the n-th station, the train only travels (n-1) intervals!
⬇️ 【Reverse Dive】: If the common difference d is negative, the value decreases.
🗺️ 【Mist Exploration】: Observe the total difference between two stations and divide it by the number of intervals to find the common difference d!

⚠️ Must "Submit Prediction" first! Correct: +20 points, Wrong: -5 points. Unlocks validation animation!
Level 1
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🏆 Railway Construction Leaderboard

🏆 By Highest Score 🕒 By Latest Challenge
Rank Name Highest Score ⏱️ Time Date
🥇 1 Jojo 240 02:50 2026-04-23
🥈 2 90221蕭 240 03:48 2026-03-31
🥉 3 90204 240 03:51 2026-04-30
4 德意志科技世界第一 240 03:51 2026-06-03
5 5 240 04:50 2026-09-14
6 90226 220 03:15 2026-04-16
7 蘇乙綺 215 03:33 2026-05-07
8 902Alysa 215 04:30 2026-04-23
9 90205 215 04:52 2026-04-16
10 Wendy 190 07:45 2026-04-09