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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
23 lines
504 B
C++
23 lines
504 B
C++
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#include <stdio.h>
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#include <math.h>
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double LogAN(double a, double N)
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{
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return log(N) / log(a);
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}
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int main()
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{
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int N = 0;
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while (scanf("%d", &N) != EOF)
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{
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double fBitNum = LogAN(2, N+3);
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int nBitNum = ceil(fBitNum);
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unsigned int nBitIP = ~((1<<nBitNum) - 1);
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printf("%u.%u.%u.%u\n",
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(nBitIP >> 24),
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((nBitIP >> 16) & 0xFF),
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((nBitIP >> 8) & 0xFF),
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nBitIP & 0xFF);
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}
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return 0;
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}
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