{ "data": { "question": { "questionId": "1441", "questionFrontendId": "1318", "categoryTitle": "Algorithms", "boundTopicId": 70115, "title": "Minimum Flips to Make a OR b Equal to c", "titleSlug": "minimum-flips-to-make-a-or-b-equal-to-c", "content": "

Given 3 positives numbers a, b and c. Return the minimum flips required in some bits of a and b to make ( a OR b == c ). (bitwise OR operation).
\r\nFlip operation consists of change any single bit 1 to 0 or change the bit 0 to 1 in their binary representation.

\r\n\r\n

 

\r\n

Example 1:

\r\n\r\n

\"\"

\r\n\r\n
\r\nInput: a = 2, b = 6, c = 5\r\nOutput: 3\r\nExplanation: After flips a = 1 , b = 4 , c = 5 such that (a OR b == c)
\r\n\r\n

Example 2:

\r\n\r\n
\r\nInput: a = 4, b = 2, c = 7\r\nOutput: 1\r\n
\r\n\r\n

Example 3:

\r\n\r\n
\r\nInput: a = 1, b = 2, c = 3\r\nOutput: 0\r\n
\r\n\r\n

 

\r\n

Constraints:

\r\n\r\n", "translatedTitle": "或运算的最小翻转次数", "translatedContent": "

给你三个正整数 abc

\n\n

你可以对 ab 的二进制表示进行位翻转操作,返回能够使按位或运算   a OR b == c  成立的最小翻转次数。

\n\n

「位翻转操作」是指将一个数的二进制表示任何单个位上的 1 变成 0 或者 0 变成 1 。

\n\n

 

\n\n

示例 1:

\n\n

\"\"

\n\n
输入:a = 2, b = 6, c = 5\n输出:3\n解释:翻转后 a = 1 , b = 4 , c = 5 使得 a OR b == c
\n\n

示例 2:

\n\n
输入:a = 4, b = 2, c = 7\n输出:1\n
\n\n

示例 3:

\n\n
输入:a = 1, b = 2, c = 3\n输出:0\n
\n\n

 

\n\n

提示:

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