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Update template.cc 

Signed-off-by: subcrip <contact@subc.rip>
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subcrip 2024-07-12 00:28:58 +08:00
parent 20614d6737
commit a5687a8c25
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template.cc
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@ -250,6 +250,7 @@ return_t qpow(ll b, ll p) {
}
#define comb(n, k) ((n) < 0 or (k) < 0 or (n) < (k) ? 0 : fact[n] / fact[k] / fact[(n) - (k)])
#define fastcomb(n, k) ((n) < 0 or (k) < 0 or (n) < (k) ? 0 : fact[n] * factrev[k] * factrev[(n) - (k)])
constexpr inline int lg2(ll x) { return x == 0 ? -1 : sizeof(ll) * 8 - 1 - __builtin_clzll(x); }