{"type":"rich","version":"1.0","title":"阿甘 wrote","author_name":"阿甘 (npub13z…l2rce)","author_url":"https://yabu.me/npub13zyg3zysfylqc6nwfgj2uvce5rtlck2u50vwtjhpn92wzyusprfsdl2rce","provider_name":"njump","provider_url":"https://yabu.me","html":"nostr:npub1gcd3atn3dv9l9hjrql2jcvecczgppemsg4n2lw3f7vad2s5f5ydqu7mht7 四个人过桥，每趟a需要1分钟，b需要2分钟，c需要5分钟，d需要10分钟。只有一个手电筒，过桥必须要使用手电筒。且每次最多过两个人。请问最少多长时间，四个人都可以过去？"}