Submission #494553

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
4945532021-12-15 17:23:01inksamuraiChecker (COCI19_checker)C++17
0 / 110
171 ms34068 KiB
#include <bits/stdc++.h>
// cut here
#ifdef _MSC_VER
#include <intrin.h>
#endif
namespace atcoder {
namespace internal {
int ceil_pow2(int n) {
int x = 0;
while ((1U << x) < (unsigned int)(n)) x++;
return x;
}
int bsf(unsigned int n) {
#ifdef _MSC_VER
unsigned long index;
_BitScanForward(&index, n);
return index;
#else
return __builtin_ctz(n);
#endif
}
} // namespace internal
} // namespace atcoder
 
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