今天我想跟大家分享一條思考題,,,如下:

中文﹕某晚上有四個傷兵需要橫過一條破橋以逃離敵方炮火，該破橋每次最多只能承托兩個士兵，當兩個士兵一起過橋時，他們必須以較慢的士兵的速度行走；該四個士兵只有一個照明燈﹕他們每次都必須攜帶照明燈以安全的速度過橋；如果該四個士兵各需１、２、４，及６分鐘時間過橋，求他們全部安全過橋的最短時間。

英文﹕Four wounded soldiers have to cross a damaged bridge at night to escape from enemy fire. The bridge can only take two soldiers at a time;when two soldiers cross together, they have to travel at the speed of the slower member. The fuor soldiers have only one torch between them:to cross safely thw torch has to go across each time. If the four soldiers individually take 1, 2, 4and 6 minutes to cross the bridge, find the minimum time needed for all four to cross sarely.

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