提交记录 28069
提交时间 |
评测时间 |
2025-04-27 15:00:22 |
2025-04-27 15:00:28 |
#include <algorithm>
unsigned b[200000000];
unsigned buc[4][256];
void sort(unsigned *a, int n)
{
for (int i = 0; i < n; ++i)
{
++buc[0][a[i] & 255];
++buc[1][(a[i] >> 8) & 255];
++buc[2][(a[i] >> 16) & 255];
++buc[3][a[i] >> 24];
}
for (unsigned k = 0; k < 4; ++k)
{
unsigned offset = 0;
for (unsigned i = 0; i < 256; ++i)
std::swap(buc[k][i], offset), offset += buc[k][i];
}
for (unsigned i = 0; i < n; ++i) b[buc[0][a[i] & 255]++] = a[i];
for (unsigned i = 0; i < n; ++i) a[buc[1][b[i] >> 8 & 255]++] = b[i];
for (unsigned i = 0; i < n; ++i) b[buc[2][a[i] >> 16 & 255]++] = a[i];
for (unsigned i = 0; i < n; ++i) a[buc[3][b[i] >> 24 & 255]++] = b[i];
}
Compilation | N/A | N/A | Compile OK | Score: N/A | 显示更多 |
Testcase #1 | 1.03 ms | 812 KB | Accepted | Score: 34 | 显示更多 |
Testcase #2 | 1.099 s | 762 MB + 992 KB | Accepted | Score: 33 | 显示更多 |
Testcase #3 | 2.198 s | 1525 MB + 928 KB | Accepted | Score: 33 | 显示更多 |
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