Quote:
Originally Posted by pdurrant
Almost right. At one point (the fourth day) you're trying to carry water for 5 days. You can only carry enough water for 4 days.
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Spoiler:
bold where I made changes:
Take water for 4 days, leave the oasis.
After 1 day, leave water for 2 days in a safe place, use the remaining water to get back to the oasis. (2 days have passed)
Take water for 4 days, leave the oasis again.
After 1 day, you are left with 3 days' water, but find the 2 day's water you left (I hope no one stole it). Leave 1 day's water behind, and take with you 4 day's water. (3 days have passed)
Go on for one more day (distance of two days). You have now water for 3 days. Hide water for 2 days there. Use the remaining water to walk back 1 day, then find the water you hid there to walk back 1 more day to the oasis. (6 days have passed)
Take water for 4 days, leave the oasis for the last time.
After 2 days, you have 2 days' water left, but find the water you hid, so you now have water for 4 more days. With it, you can cross the desert. (12 days have passed)
12 days in total.