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Update include.hh

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Ariel 2024-02-24 13:37:16 +08:00 committed by GitHub
parent d08a4ddc4d
commit 9c78180bbf
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1 changed files with 4 additions and 1 deletions
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include.hh
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@ -32,7 +32,7 @@ using pll = pair<ll, ll>;
constexpr int INF = 0x3f3f3f3f;
constexpr ull MDL = 1e9 + 7;
constexpr ull PRIME = 998'244'353;
constexpr ll MDL1 = 8784491;
constexpr ll MDL1 = 825;
constexpr ll MDL2 = PRIME;
/* random */
@ -138,6 +138,8 @@ template<typename T> ostream& operator<<(ostream& out, vector<T> vec) {
#define popfront(q, ...) __AS_PROCEDURE(auto [__VA_ARGS__] = q.front();q.pop_front();)
/* math */
constexpr inline int lg2(ll x) { return x == 0 ? -1 : sizeof(ll) * 8 - 1 - __builtin_clzll(x); }
void __exgcd(ll a, ll b, ll& x, ll& y) {
if (b == 0) {
x = 1, y = 0;
@ -203,3 +205,4 @@ int period(string s) { // find the length of shortest recurring period
return n;
}
/////////////////////////////////////////////////////////