the underwear inside the coat is the same as above = 6 meters; 6 meters +6 meters = 12 meters; 20-12 = remaining 8 meters.
Choose the one with the lightest weight of the 3 people (or choose the one with the best skiing, you can go to the bottom of the mountain to find someone to rescue, and the remaining 2 hug to keep warm and wait for rescue.) Swing to the ground in a parabola (although it is difficult, but After all, it is better than a vertical hard landing!), 8 meters is close to the 3rd floor, which is higher than the height of the 2nd floor.
If you are lucky, you can land with minor injuries or even intact, not like the one eaten by wolves. Alas, it is really painful for those who watch it, especially you and me who have acrophobia.
The above, it is best to complete it within 2 hours after being trapped for half an hour, otherwise, the body, mind and physique will be greatly reduced.
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