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需要加到hint中吗?In Reply To:对此题样例的说明: Posted by:rruucc at 2004-09-12 12:25:30 > 1 > 4 3 > 3 > 1 > 2 > 最优方案为: > 总部O以费用为1的方案连接1阁下级中继M,以费用为2,3的方案分别连接2个工事P1,P2 > 中继M以费用1,2的方案再连接2个工事P3,P4 > P1的费用为2 > P2的费用为3 > P3的费用为1 > P4的费用为2 > M的费用为1*2=2(由2个下级工事) > 最后计算总费用时,因为M有2个直接(或间接)连接的下级工事,所以还需要乘以2(于是2*2=4) > 总费用是2+3+1+2+4=12 > > 特别注意! > 实际上,如果一个中继有N个下级,而它的上级以费用C方案连接它,那么应该把C*N*N加到总费用中去 > Followed by: Post your reply here: |
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