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	`1`	`+// 从后向前,反向解决问题`
	`2`	`+`
	`3`	`+// Runtime: 52 ms, faster than 92.07% of C++ online submissions for Shifting Letters.`
	`4`	`+// Memory Usage: 11.7 MB, less than 75.00% of C++ online submissions for Shifting Letters.`
	`5`	`+`
	`6`	`+class Solution`
	`7`	`+{`
	`8`	`+public:`
	`9`	`+ string shiftingLetters(string S, vector<int>& shifts)`
	`10`	`+ {`
	`11`	`+ string res = S;`
	`12`	`+`
	`13`	`+ int shift = 0;`
	`14`	`+`
	`15`	`+ for (int index = res.length() - 1; index >= 0; --index)`
	`16`	`+ {`
	`17`	`+ shift = (shift + shifts[index]) % 26;`
	`18`	`+`
	`19`	`+ int temp = res[index] - 'a';`
	`20`	`+ temp = (temp + shift) % 26;`
	`21`	`+`
	`22`	`+ res[index] = (temp + 'a');`
	`23`	`+ }`
	`24`	`+`
	`25`	`+ return res;`
	`26`	`+ }`
	`27`	`+};`

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