public static void CalculateInv(Span <StaticModInt <T> > a)
{
var n = a.Length;
var h = InternalMath.CeilPow2(n);
for (int ph = h; ph >= 1; ph--)
{
// ブロックサイズの半分
int w = 1 << (ph - 1);
// ブロック数
int p = 1 << (h - ph);
var iNow = StaticModInt <T> .Raw(1);
// 各ブロックの s 段目
for (int s = 0; s < w; s++)
{
int offset = s << (h - ph + 1);
for (int i = 0; i < p; i++)
{
var l = a[i + offset];
var r = a[i + offset + p];
a[i + offset] = l + r;
a[i + offset + p] = StaticModInt <T> .Raw(
unchecked ((int)((ulong)(default(T).Mod + l.Value - r.Value) * (ulong)iNow.Value % default(T).Mod)));
}
iNow *= sumIE[InternalBit.BSF(~(uint)s)];
}
}
}
private static StaticModInt <T>[] CalcurateSumE()
{
int g = InternalMath.PrimitiveRoot((int)default(T).Mod);
int cnt2 = InternalBit.BSF(default(T).Mod - 1);
var e = new StaticModInt <T>(g).Pow((default(T).Mod - 1) >> cnt2);
var ie = e.Inv();
var sumE = new StaticModInt <T> [cnt2 - 2];
// es[i]^(2^(2+i)) == 1
Span <StaticModInt <T> > es = stackalloc StaticModInt <T> [cnt2 - 1];
Span <StaticModInt <T> > ies = stackalloc StaticModInt <T> [cnt2 - 1];
for (int i = es.Length - 1; i >= 0; i--)
{
// e^(2^(2+i)) == 1
es[i] = e;
ies[i] = ie;
e *= e;
ie *= ie;
}
var now = StaticModInt <T> .Raw(1);
for (int i = 0; i < sumE.Length; i++)
{
sumE[i] = es[i] * now;
now *= ies[i];
}
return(sumE);
}
public static void Calculate(Span <StaticModInt <T> > a)
{
var n = a.Length;
var h = InternalMath.CeilPow2(n);
for (int ph = 1; ph <= h; ph++)
{
// ブロックサイズの半分
int w = 1 << (ph - 1);
// ブロック数
int p = 1 << (h - ph);
var now = StaticModInt <T> .Raw(1);
// 各ブロックの s 段目
for (int s = 0; s < w; s++)
{
int offset = s << (h - ph + 1);
for (int i = 0; i < p; i++)
{
var l = a[i + offset];
var r = a[i + offset + p] * now;
a[i + offset] = l + r;
a[i + offset + p] = l - r;
}
now *= sumE[InternalBit.BSF(~(uint)s)];
}
}
}
public void DivisionNotPrimeTest(int input, int expected)
{
var m = StaticModInt <Mod15> .Raw(input);
var actual = 1 / m;
Assert.Equal(expected, actual);
}
private void ConvolutionMod <T>(int lengthA, int lengthB, ulong seed) where T : struct, IStaticMod
{
var rand = new XorShift(seed);
var a = new StaticModInt <T> [lengthA];
var b = new StaticModInt <T> [lengthB];
var aRaw = new ulong[lengthA];
var bRaw = new ulong[lengthB];
for (int i = 0; i < a.Length; i++)
{
aRaw[i] = rand.Next();
a[i] = StaticModInt <T> .Raw((int)(aRaw[i] % default(T).Mod));
}
for (int i = 0; i < b.Length; i++)
{
bRaw[i] = rand.Next();
b[i] = StaticModInt <T> .Raw((int)(bRaw[i] % default(T).Mod));
}
var expected = new StaticModInt <T> [a.Length + b.Length - 1];
for (int i = 0; i < a.Length; i++)
{
for (int j = 0; j < b.Length; j++)
{
expected[i + j] += a[i] * b[j];
}
}
// 各種オーバーロードについてテスト
var actualModInt = AtCoder.Math.Convolution(a, b);
var actualModIntSpan = AtCoder.Math.Convolution((ReadOnlySpan <StaticModInt <T> >)a, b);
var actualInt = AtCoder.Math.Convolution <T>(a.Select(ai => ai.Value).ToArray(), b.Select(bi => bi.Value).ToArray());
var actualUInt = AtCoder.Math.Convolution <T>(a.Select(ai => (uint)ai.Value).ToArray(), b.Select(bi => (uint)bi.Value).ToArray());
var actualLong = AtCoder.Math.Convolution <T>(a.Select(ai => (long)ai.Value).ToArray(), b.Select(bi => (long)bi.Value).ToArray());
var actualULong = AtCoder.Math.Convolution <T>(aRaw, bRaw);
Assert.Equal(expected, actualModInt);
Assert.Equal(expected, actualModIntSpan.ToArray());
Assert.Equal(expected.Select(ei => ei.Value), actualInt);
Assert.Equal(expected.Select(ei => (uint)ei.Value), actualUInt);
Assert.Equal(expected.Select(ei => (long)ei.Value), actualLong);
Assert.Equal(expected.Select(ei => (ulong)ei.Value), actualULong);
}
private static StaticModInt <T>[] CalcurateSumIE()
{
int g = InternalMath.PrimitiveRoot <T>();
int cnt2 = InternalBit.BSF(default(T).Mod - 1);
var e = new StaticModInt <T>(g).Pow((default(T).Mod - 1) >> cnt2);
var ie = e.Inv();
var sumIE = new StaticModInt <T> [30];
// es[i]^(2^(2+i)) == 1
Span <StaticModInt <T> > es =
#if !NETCOREAPP3_0_OR_GREATER
new
#else
stackalloc
#endif
StaticModInt <T> [cnt2 - 1];
Span <StaticModInt <T> > ies =
#if !NETCOREAPP3_0_OR_GREATER
new
#else
stackalloc
#endif
StaticModInt <T> [cnt2 - 1];
for (int i = es.Length - 1; i >= 0; i--)
{
// e^(2^(2+i)) == 1
es[i] = e;
ies[i] = ie;
e *= e;
ie *= ie;
}
var now = StaticModInt <T> .Raw(1);
for (int i = 0; i <= cnt2 - 2; i++)
{
sumIE[i] = ies[i] * now;
now *= es[i];
}
return(sumIE);
}
public ModCombination(int max = 1000000)
{
if (max >= default(T).Mod)
{
ThrowArgumentOutOfRangeException();
}
_factorials = new StaticModInt <T> [max + 1];
_invFactorials = new StaticModInt <T> [max + 1];
_factorials[0] = _factorials[1] = StaticModInt <T> .Raw(1);
_invFactorials[0] = _invFactorials[1] = StaticModInt <T> .Raw(1);
for (int i = 2; i < _factorials.Length; i++)
{
_factorials[i] = _factorials[i - 1] * StaticModInt <T> .Raw(i);
}
_invFactorials[^ 1] = _factorials[^ 1].Inverse();
public void Solve(ConsoleReader cr, ConsoleWriter cw)
{
int n = cr;
int q = cr;
var seg = new Segtree <(StaticModInt <Mod998244353> a, StaticModInt <Mod998244353> b), SegtreeSolverOp>(
cr.Repeat(n).Select(cr => (StaticModInt <Mod998244353> .Raw(cr), StaticModInt <Mod998244353> .Raw(cr))));
for (int i = 0; i < q; i++)
{
int t = cr;
if (t == 0)
{
int p = cr;
int c = cr;
int d = cr;
seg[p] = (StaticModInt <Mod998244353> .Raw(c), StaticModInt <Mod998244353> .Raw(d));
}
else
{
int l = cr;
int r = cr;
int x = cr;
var(a, b) = seg[l..r];
public static void Calculate(Span <StaticModInt <T> > a)
{
CheckPow2(a.Length);
var n = a.Length;
var h = InternalBit.CeilPow2(n);
var regLength = Vector <uint> .Count;
#if !NETCOREAPP3_0_OR_GREATER
var copyTmp = new uint[regLength];
#endif
// 全要素がmodのVector<uint>を作成（比較および加減算用）
var modV = new Vector <uint>(default(T).Mod);
for (int ph = 1; ph <= h; ph++)
{
// ブロックサイズの半分
int w = 1 << (ph - 1);
// ブロック数
int p = 1 << (h - ph);
var now = StaticModInt <T> .Raw(1);
// 各ブロックの s 段目
for (int s = 0; s < w; s++)
{
int offset = s << (h - ph + 1);
var ls = a.Slice(offset, p);
var rs = a.Slice(offset + p, p);
if (p < regLength)
{
for (int i = 0; i < p; i++)
{
var l = ls[i];
var r = rs[i] * now;
ls[i] = l + r;
rs[i] = l - r;
}
}
else
{
foreach (ref var r in rs)
{
r *= now;
}
// uintとして再解釈
var lu = MemoryMarshal.Cast <StaticModInt <T>, uint>(ls);
var ru = MemoryMarshal.Cast <StaticModInt <T>, uint>(rs);
for (int i = 0; i < lu.Length; i += regLength)
{
var luSliced = lu.Slice(i);
var ruSliced = ru.Slice(i);
var u = new Vector <uint>(luSliced);
var v = new Vector <uint>(ruSliced);
var add = u + v;
var sub = u - v;
var ge = Vector.GreaterThanOrEqual(add, modV);
add = Vector.ConditionalSelect(ge, add - modV, add);
ge = Vector.GreaterThanOrEqual(sub, modV);
sub = Vector.ConditionalSelect(ge, sub + modV, sub);
#if !NETCOREAPP3_0_OR_GREATER
add.CopyTo(copyTmp);
copyTmp.CopyTo(luSliced);
sub.CopyTo(copyTmp);
copyTmp.CopyTo(ruSliced);
#else
add.CopyTo(luSliced);
sub.CopyTo(ruSliced);
#endif
}
}
now *= sumE[InternalBit.BSF(~(uint)s)];
}
}
}