You are given a string s, a string chars of distinct characters and an integer array vals of the same length as chars.
The cost of the substring is the sum of the values of each character in the substring. The cost of an empty string is considered 0.
The value of the character is defined in the following way:
\n\nchars, then its value is its corresponding position (1-indexed) in the alphabet.\n\n\t'a' is 1, the value of 'b' is 2, and so on. The value of 'z' is 26.i is the index where the character occurs in the string chars, then its value is vals[i].Return the maximum cost among all substrings of the string s.
\n
Example 1:
\n\n\nInput: s = "adaa", chars = "d", vals = [-1000]\nOutput: 2\nExplanation: The value of the characters "a" and "d" is 1 and -1000 respectively.\nThe substring with the maximum cost is "aa" and its cost is 1 + 1 = 2.\nIt can be proven that 2 is the maximum cost.\n\n\n
Example 2:
\n\n\nInput: s = "abc", chars = "abc", vals = [-1,-1,-1]\nOutput: 0\nExplanation: The value of the characters "a", "b" and "c" is -1, -1, and -1 respectively.\nThe substring with the maximum cost is the empty substring "" and its cost is 0.\nIt can be proven that 0 is the maximum cost.\n\n\n
\n
Constraints:
\n\n1 <= s.length <= 105s consist of lowercase English letters.1 <= chars.length <= 26chars consist of distinct lowercase English letters.vals.length == chars.length-1000 <= vals[i] <= 1000给你一个字符串 s ，一个字符 互不相同 的字符串 chars 和一个长度与 chars 相同的整数数组 vals 。
子字符串的开销 是一个子字符串中所有字符对应价值之和。空字符串的开销是 0 。
字符的价值 定义如下：
\n\nchars 中，那么它的价值是它在字母表中的位置（下标从 1 开始）。\n\n\t'a' 的价值为 1 ，'b' 的价值为 2 ，以此类推，'z' 的价值为 26 。chars 中的位置为 i ，那么它的价值就是 vals[i] 。请你返回字符串 s 的所有子字符串中的最大开销。
\n\n
示例 1：
\n\n输入：s = \"adaa\", chars = \"d\", vals = [-1000]\n输出：2\n解释：字符 \"a\" 和 \"d\" 的价值分别为 1 和 -1000 。\n最大开销子字符串是 \"aa\" ，它的开销为 1 + 1 = 2 。\n2 是最大开销。\n\n\n
示例 2：
\n\n输入：s = \"abc\", chars = \"abc\", vals = [-1,-1,-1]\n输出：0\n解释：字符 \"a\" ，\"b\" 和 \"c\" 的价值分别为 -1 ，-1 和 -1 。\n最大开销子字符串是 \"\" ，它的开销为 0 。\n0 是最大开销。\n\n\n
\n\n
提示：
\n\n1 <= s.length <= 105s 只包含小写英文字母。1 <= chars.length <= 26chars 只包含小写英文字母，且 互不相同 。vals.length == chars.length-1000 <= vals[i] <= 1000\\u7248\\u672c\\uff1a \\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 \\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\"],\"java\":[\"Java\",\" \\u7248\\u672c\\uff1a \\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u88ab\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u5305\\u542b Pair \\u7c7b: https:\\/\\/docs.oracle.com\\/javase\\/8\\/javafx\\/api\\/javafx\\/util\\/Pair.html <\\/p>\"],\"python\":[\"Python\",\" \\u7248\\u672c\\uff1a \\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982\\uff1aarray<\\/a>, bisect<\\/a>, collections<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u6ce8\\u610f Python 2.7 \\u5c06\\u57282020\\u5e74\\u540e\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\" \\u7248\\u672c\\uff1a \\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 \\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n 1. 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