Given two strings s and t, your goal is to convert s into t in k moves or less.
During the ith (1 <= i <= k) move you can:
j (1-indexed) from s, such that 1 <= j <= s.length and j has not been chosen in any previous move, and shift the character at that index i times.Shifting a character means replacing it by the next letter in the alphabet (wrapping around so that 'z' becomes 'a'). Shifting a character by i means applying the shift operations i times.
Remember that any index j can be picked at most once.
Return true if it's possible to convert s into t in no more than k moves, otherwise return false.
\n
Example 1:
\n\n\nInput: s = "input", t = "ouput", k = 9\nOutput: true\nExplanation: In the 6th move, we shift 'i' 6 times to get 'o'. And in the 7th move we shift 'n' to get 'u'.\n\n\n
Example 2:
\n\n\nInput: s = "abc", t = "bcd", k = 10\nOutput: false\nExplanation: We need to shift each character in s one time to convert it into t. We can shift 'a' to 'b' during the 1st move. However, there is no way to shift the other characters in the remaining moves to obtain t from s.\n\n\n
Example 3:
\n\n\nInput: s = "aab", t = "bbb", k = 27\nOutput: true\nExplanation: In the 1st move, we shift the first 'a' 1 time to get 'b'. In the 27th move, we shift the second 'a' 27 times to get 'b'.\n\n\n
\n
Constraints:
\n\n1 <= s.length, t.length <= 10^50 <= k <= 10^9s, t contain only lowercase English letters.给你两个字符串 s 和 t ，你的目标是在 k 次操作以内把字符串 s 转变成 t 。
在第 i 次操作时（1 <= i <= k），你可以选择进行如下操作：
s 中满足 1 <= j <= s.length 且之前未被选过的任意下标 j （下标从 1 开始），并将此位置的字符切换 i 次。切换 1 个字符的意思是用字母表中该字母的下一个字母替换它（字母表环状接起来，所以 'z' 切换后会变成 'a'）。第 i 次操作意味着该字符应切换 i 次
请记住任意一个下标 j 最多只能被操作 1 次。
如果在不超过 k 次操作内可以把字符串 s 转变成 t ，那么请你返回 true ，否则请你返回 false 。
\n\n
示例 1：
\n\n\n输入：s = \"input\", t = \"ouput\", k = 9\n输出：true\n解释：第 6 次操作时，我们将 'i' 切换 6 次得到 'o' 。第 7 次操作时，我们将 'n' 切换 7 次得到 'u' 。\n\n\n
示例 2：
\n\n\n输入：s = \"abc\", t = \"bcd\", k = 10\n输出：false\n解释：我们需要将每个字符切换 1 次才能得到 t 。我们可以在第 1 次操作时将 'a' 切换成 'b' ，但另外 2 个字母在剩余操作中无法再转变为 t 中对应字母。\n\n\n
示例 3：
\n\n\n输入：s = \"aab\", t = \"bbb\", k = 27\n输出：true\n解释：第 1 次操作时，我们将第一个 'a' 切换 1 次得到 'b' 。在第 27 次操作时，我们将第二个字母 'a' 切换 27 次得到 'b' 。\n\n\n
\n\n
提示：
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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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