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提醒使用相鄰矩陣的同學...

Posted by soultama at 2011-06-16 04:49:22 on Problem 3259
吃輸入資料的時候只要留下權重最小的邊,因為測試數據會有parallel edges陷阱...

另外是測試數據都會連通Node 1,所以可以放心在第1個點用Single source Bellman-Ford。

附上我測試用的數據,希望會幫到忙

3
5 3 1
2 3 1
2 5 1
3 4 1
4 5 10
4 3 1
1 2 1
2 3 1
3 4 1
4 2 2
2 1 1
1 2 10
1 2 11
1)這讓人很無言, 實際上應該是YES(2->3->4->5->2), 不過我輸出NO的程序就是AC了
2)NO (2->3->4->2的值是0, 回不了過去)
3)YES

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