Description
给定一张包含N个单词的表，每个单词有个价值W。要求从中选出一个子序列使得其
中的每个单词是后一个单词的子串，最大化子序列中W的和。
Input
第一行一个整数TEST，表示数据组数。
接下来TEST组数据，每组数据第一行为一个整数N。
接下来N行，每行为一个字符串和一个整数W。
Output
TEST行，每行一个整数，表示W的和的最大值。
数据规模
设字符串的总长度为Len
30.的数据满足，TEST≤5，N≤500，Len≤10^4
100.的数据满足，TEST≤10，N≤20000，Len≤3*10^5
Sample Input
1500
baababaaabbbabbbaaaabbbbaaabbbbabaabbababbabaabbbbabbaabbabbbabbabbabbaaaaabbbbabaaabaabaaaaabbbabaaabbaaaabbbaabbbaabbbaabbbbbabaaaabbabbbaaaabbaaaaaaababbbaaaaaabbbabbbbbbaabaababbabbbbaaabababbbbbabbabaaaaabbabababaabbbbabbabaabbbaaababbbabbaaabbbbaabbabbbaaabbbaababbbbbaababbaaaabbbbbabaababbbaabbbaaabaabbbbaaaaabbbbabaabbbaaaaaabaaababaaabbabbabaaaabbbaabaabbbbbbaababaababaaaaabaabaabaaaaaabaaabbaabababbabaaabbababaaabbbaabbbabbbababbbbbbaaabbbaababbbbbbababbaabbbbbaaaabbaabaabbbabbabaababbababaaabaaaababaaabbbbaaabbabbbabaabbabababbaaabaabaaaaabbbabbaaabbaababbaaaaaabaabbaababbbbabbaabaabaaaaabaabaabbbaabbbabaabbabbaaaabababbaaabbbaabababaabbababaaabaabaaaabbbabababbbbbabaaaabbabbbbaaaabbbaaaaaaababaaaabababaababbaaabababaabbabbbbaaabaabababbaaaaabbbaabbababaaaabbababaaaababbaabbbbabbbbaababbbbaaabaaabbbbaabaaabaabaabbbbaaaabaaabbbbbbbaabbabbaaaabbbbabbaabaaaaaabbabbbabaabbaabaaababbbaababaaaabbabbbbbbabbaaababbaaabaaabbaaaabbbabaabaaababaabababbbbbaaabbaaababbaaaaabbbbaabbabaabbbbbbbabbbababaabaabbbabaabaabbabaabbaaaaaaaabaaaaabbabaaababbabaabbaababbbbbbbbaaabbaaaababbabaabaabbbabbabaabbabbabbabbbabbbbbababbbabbbbaaaaaaaaabbbaaababbbbababaaaabbabbbbbbbaabababbaaaababbababaaaaaaabababbaabbababbaabbaaabaaabbaaaaabababbbabbbaaaaaabbbbaabaaabaababbaababbbaaaaaababbabaaaabbbababbaababaaaaabbabbbabbababbabaaaaaaaabbbbbabbaaaababbbaabaaabaaabbabbaaaaabaabbbbbbbabaabbbaabaaaabaabbabbababaabbaabbbbbaaaaaaabbbabaaaaaaaabaabbabaabbabbabbbbbaabaabaaabaabbaabaaaaabbbbbbbaabbbbaaaabbbababaababbbabaaababaabaabaababaaababbbbababaabbababbaabbbaabbbaaabbabababaabbabaabbbbaaaababbaabbabaaaaabbabbbbabbabaaaabaabbabbbabbbbabbababaabbabaabbbbbbbbabbbabbbabaabbaabaabaababbbbabaaababaaababbabbabaaaabaaabaaaababbabbbbbabaaabbaabababbbbaaabbbbbaaabaabaaaabbbaabbbabbaaaaabbaabbaabbbababbaabbbbbabaabaabbaaababababaaabababbbbabaaaababbabbbabbabbbbbbabbaabbbaabaabbabbbbaaaaaababaababbbabbabababbababababbaabbaababbabbaabaaabbbbbbbbaaabaabbbbbbbabbabaaabaaaabbabbbbbbbbbabbbaabbbabbbbaabbaababbbbbbbbaaababbaaaaaababababbbabaaabbbaaaabababbbabbbabaababaabaababbbabbaaaaabbabaaabaaabbabaababbaaabbaaabbaaababbbaabbaaaaaababaaaabbbbbaaababbabbbabbbababababaabbbbabaaaaababbabbaaabbabbabbabbaaaaaaabbbbabbaababbbbabbbaabaabbababbbabbbbbbbbbbaabbabbbbaabaaababbbbbbababaababaabababaabaabbaaabbabaaabbbabbabbaabbbaaabaaababbabaabaaaabaaababbbbbaaaaabbaabbaababababbbabaabbabbabbbaabbbbbaabaabbabaabbaabbabbabbaaababbaabbbabaabbaabaaaaabbabbababaabbbabaaabababbbbaaaabaaababbbabaaaabbbbaaaaaaaaaaaaaaabbbaaaabbaabbaabaabbabbabbbbaabaabbaaabbbabbababbbbbbbbbbabaaabaababbabbbbaaaaabababbbaaabbbbababbbbbaabbaaabbbabbaaabbabbbbbabbabbbaaaaabbaababbbaaababaababbbababaaabbbabbaaaabbaaaaaaaaabaaaabbaaabaaaabbbaaababbbbbababbababaabaaabaabbbbbbbaaabbaabaababaabbbaabbaabbaaabaaababbbaababbaabaababbaaababaabaabbabbaababbbabaabaaabbbaabbaaabbbbaababbbbaabbabaabbbbababbbbbaaaabbbbbbabbbababbaabbbaabaabbaaaaababbbbbbbabbbabaababaabababbabbbbabbababbaabbabaababbbbbabbbbbaabbabbaaaaabababbbbabbbbaabbaaabbaaaabababaabbbababaababaabbaaaaabaaabbbbbbbabaabbbbaaabababaabbababbabaabbababbbbbbbbbbbaaaabbabbababbaabbbababbbbaaabbaababbabbbaabbbbaaabbaaaaabaababaaaabbaabaaabaababbabbababbbbaabababaabaabababbbababbbbabababbabbbbbbbbaabaaabbbabbbbabaabbabbbabbaaabaabbbbabaaaaabbbaabbbbbaaaabaababbbaabaaabbbbaabaaaaaabbbbabbbbbbbabaaabbabaaaabbaabbbbabbaaaaaababbbbbbbbaaaabababbbaabaabbabaababbbabaaaaaababaaababbbaababbabbaabbaabababbbbbaaaaaaabbaaababaaaaaabbabbbbbbaabaabaabbaaabbbbabbbbbabbbaaabbababaabbabbbaaaaaaababababbbaabbaaabaabaaaaabbbbbbababbbabaaabaaabaaabbabaabbbbbababbaaabbbababaabaabaabbaaaabaabbabbbbabbababaaabababbbbbabaaabaabbaaabaabaabaaabbbabaabababbabababbabbaabbbbbbbbaabbbaaaaaaabababaabaaaabbbaabaaababbababaaabbbbbabababaaabbaababababbbbaababbbabbbbbaaaabbbbaaabaaaabababbbababbabbbabbbabbababaaaaabababbbaaabbbbbaababbabaabaaabaabbababaaabaaabbaaabaaaababababbabbbaababaabbbaaaaaaabaabbbabbaaababbbabbababbaaaaaaababbabbaabaababaaaaaaabaabbaaabbbaabbbbabbabaaaabbbbbaababaaaaaabbabaababaababbababbabbbabbbbaababbbbbbbaabaabbabaababbaaaabbbababbaaabaabbbbaabbbaaabbbaabaaabbbbbabbabbabbbbbabbaaabaaabbbabbbbbbababababaaabbbabbaaaaababbabbaaababaaaaababbbbbbabaababbabbbaaababbbaabbbbbabaaaabbbaabababababbbbbbbbaaaaabbbbbbaaaabbaabaaaabbaababaaabaabaabaaababbaaabaaabbababbababbbaabaaaababaabbaaabaaabaaabaabaaaababbabbaaaaaaabbbababbbabbbbbabbbbbabaabbabbababbbababbbabaabaabbbababbbbabbaabababbbbbababbbbbaababababaaaaaaabababaabbbaaaaaabbaaaabbabbaabbaaabaababaababbbbabaababaabaababbbabbaabbababbaabbabbababbbbaaabaabbbbbabaaabaababbbababaaabbaaaaaaabbbababaabbbbbaabbaabbabaababaaabbaababaaababbaaaaaaaaabbbaaaaabbbabbabbbbbaabbbbababbbaaabbaabbbbbbaabbbbaaababaaaabbababbbaabbaaaaabbaaabaabaaaabbaabaaaabbbbbababaaaaaabbbabbaabbaaaaabaabaabbaabbbaaaaaabbabababbababbaabbbaabbaaaaaaaabbabbbbbabbaababbbabbbabbaaaabaabbbbbbbaabbaaabbabbbaababbbabababbaaaabaaaabbabaabaaababaabaaaabababaabaaabaabbbabaaaabaaabababaababbbaabaababbabbaaaaaaabbbaaaabbabbaabaabaabbabbabbabababba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