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18 lines
493 B
18 lines
493 B
#include <bits/stdc++.h>
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using namespace std;
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typedef long long LL;
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int main() {
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//取第k位
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LL x;
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cin >> x;
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//& 0x0000ffff 是清空了前十六位
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//& 0xffff0000 是清空了后十六位
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// <<16 就把清空的前十六位整没了
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// >>16 就把清空的后十六位整没了
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// 两者再或一下，就是前后颠倒过来了
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cout << ((x & 0x0000ffff) << 16 | (x & 0xffff0000) >> 16) << endl;//万无一失的做法
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return 0;
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} |