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Suppose there exist n ropes. They have different length. The goal is to connect them so that they become one piece. The cost of connecting

Suppose there exist n ropes. They have different length. The goal is to connect them so that they become one piece. The cost of connecting rope 1 and rope 2 equals to the sum of the length of rope 1 and rope 2, plus 1. Bring a greedy algorithm which connect all n ropes with the minimum cost.

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