#include #include #include #include #include namespace nachia{ template struct PrimitiveRoot{ using u64 = unsigned long long; static constexpr u64 powm(u64 a, u64 i) { u64 res = 1, aa = a; for( ; i; i /= 2){ if(i & 1) res = res * aa % MOD; aa = aa * aa % MOD; } return res; } static constexpr bool ExamineVal(unsigned int g){ u64 t = MOD - 1; for(u64 d=2; d*d<=t; d+=1+(d&1)) if(t % d == 0){ if(powm(g, (MOD - 1) / d) == 1) return false; while(t % d == 0) t /= d; } if(t != 1) if(powm(g, (MOD - 1) / t) == 1) return false; return true; } static constexpr unsigned int GetVal(){ for(u64 x=2; x class Comb{ private: std::vector F; std::vector iF; public: void extend(int newN){ int prevN = (int)F.size() - 1; if(prevN >= newN) return; F.resize(newN+1); iF.resize(newN+1); for(int i=prevN+1; i<=newN; i++) F[i] = F[i-1] * Modint::raw(i); iF[newN] = F[newN].inv(); for(int i=newN; i>prevN; i--) iF[i-1] = iF[i] * Modint::raw(i); } Comb(int n = 1){ F.assign(2, Modint(1)); iF.assign(2, Modint(1)); extend(n); } Modint factorial(int n) const { return F[n]; } Modint invFactorial(int n) const { return iF[n]; } Modint invOf(int n) const { return iF[n] * F[n-1]; } Modint comb(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return F[n] * iF[r] * iF[n-r]; } Modint invComb(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return iF[n] * F[r] * F[n-r]; } Modint perm(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return F[n] * iF[n-r]; } Modint invPerm(int n, int r) const { if(n < 0 || n < r || r < 0) return Modint(0); return iF[n] * F[n-r]; } Modint operator()(int n, int r) const { return comb(n,r); } }; } // namespace nachia namespace nachia{ int Popcount(unsigned long long c) noexcept { #ifdef __GNUC__ return __builtin_popcountll(c); #else c = (c & (~0ull/3)) + ((c >> 1) & (~0ull/3)); c = (c & (~0ull/5)) + ((c >> 2) & (~0ull/5)); c = (c & (~0ull/17)) + ((c >> 4) & (~0ull/17)); c = (c * (~0ull/257)) >> 56; return c; #endif } // please ensure x != 0 int MsbIndex(unsigned long long x) noexcept { #ifdef __GNUC__ return 63 - __builtin_clzll(x); #else using u64 = unsigned long long; int q = (x >> 32) ? 32 : 0; auto m = x >> q; constexpr u64 hi = 0x8888'8888; constexpr u64 mi = 0x1111'1111; m = (((m | ~(hi - (m & ~hi))) & hi) * mi) >> 35; m = (((m | ~(hi - (x & ~hi))) & hi) * mi) >> 31; q += (m & 0xf) << 2; q += 0x3333'3333'2222'1100 >> (((x >> q) & 0xf) << 2) & 0xf; return q; #endif } // please ensure x != 0 int LsbIndex(unsigned long long x) noexcept { #ifdef __GNUC__ return __builtin_ctzll(x); #else return MsbIndex(x & -x); #endif } } namespace nachia { template struct NttInterface{ template void Butterfly(Iter, int) const {} template void IButterfly(Iter, int) const {} template void BitReversal(Iter a, int N) const { for(int i=0, j=0; j>1; k > (i^=k); k>>=1); } } }; } // namespace nachia #include #include namespace nachia{ template struct Ntt : NttInterface { using u32 = unsigned int; using u64 = unsigned long long; static int ceil_pow2(int n) { int x = 0; while ((1U << x) < (u32)(n)) x++; return x; } static constexpr int bsf_constexpr(unsigned int n) { int x = 0; while (!(n & (1 << x))) x++; return x; } struct fft_info { static constexpr u32 g = nachia::PrimitiveRoot::val; static constexpr int rank2 = bsf_constexpr(mint::mod()-1); using RootTable = std::array; RootTable root, iroot, rate3, irate3; fft_info(){ root[rank2] = mint(g).pow((mint::mod() - 1) >> rank2); iroot[rank2] = root[rank2].inv(); for(int i=rank2-1; i>=0; i--){ root[i] = root[i+1] * root[i+1]; iroot[i] = iroot[i+1] * iroot[i+1]; } mint prod = 1, iprod = 1; for(int i=0; i<=rank2-3; i++){ rate3[i] = root[i+3] * prod; irate3[i] = iroot[i+3] * iprod; prod *= iroot[i+3]; iprod *= root[i+3]; } } }; template void ButterflyLayered(RandomAccessIterator a, int n, int stride, int repeat) const { int h = ceil_pow2(n) + stride; static const fft_info info; while(repeat){ int len = 0; if((h-len-stride)%2 == 1){ int p = 1 << (h-len-1); for(int i=0; i void Butterfly(RandomAccessIterator a, int n) const { ButterflyLayered(a, n, 0, 1); } template void IButterflyLayered(RandomAccessIterator a, int n, int stride, int repeat) const { static const fft_info info; constexpr int MOD = mint::mod(); while(repeat){ int h = ceil_pow2(n) + stride; int len = h - stride; for( ; 1 < len; len -= 2){ int p = 1 << (h-len); mint irot = 1, iimag = info.iroot[2]; for(int s=0; s<(1<<(len-2)); s++){ if(s) irot *= info.irate3[LsbIndex(~(u32)(s-1))]; mint irot2 = irot * irot; mint irot3 = irot2 * irot; int offset = (s << (h-len+2)) + p; for(int i=offset-p; i void IButterfly(RandomAccessIterator a, int n) const { IButterflyLayered(a, n, 0, 1); } }; } // namespace nachia namespace nachia { template> struct FpsNtt { public: using Fps = FpsNtt; using ElemTy = Elem; static constexpr unsigned int MOD = Elem::mod(); static constexpr int CONV_THRES = 30; static const NttInst nttInst; static const unsigned int zeta = nachia::PrimitiveRoot::GetVal(); private: using u32 = unsigned int; static Elem ZeroElem() noexcept { return Elem(0); } static Elem OneElem() noexcept { return Elem(1); } static Comb comb; std::vector a; int RSZ(int& sz) const { return sz = (sz < 0 ? size() : sz); } public: int size() const noexcept { return a.size(); } Elem& operator[](int x) noexcept { return a[x]; } const Elem& operator[](int x) const noexcept { return a[x]; } Elem getCoeff(int x) const noexcept { return (0 <= x && x < size()) ? a[x] : ZeroElem(); } static Comb& GetComb() { return comb; } static int BestNttSize(int x) noexcept { assert(x); return 1 << MsbIndex(x*2-1); } Fps move(){ return std::move(*this); } Fps& set(int i, Elem c){ a[i] = c; return *this; } Fps& removeLeadingZeros(){ int newsz = size(); while(newsz && a[newsz-1].val() == 0) newsz--; a.resize(newsz); if((int)a.capacity() / 4 > newsz) a.shrink_to_fit(); return *this; } FpsNtt(){} FpsNtt(int sz) : a(sz, ZeroElem()) {} FpsNtt(int sz, Elem e) : a(sz, e) {} FpsNtt(std::vector&& src) : a(std::move(src)) {} FpsNtt(const std::vector& src) : a(src) {} Fps& ntt() { capSize(BestNttSize(size())); nttInst.Butterfly(a.begin(), size()); return *this; } Fps& intt() { nttInst.IButterfly(a.begin(), size()); return times(Elem::raw(size()).inv()); } Fps& ntt(int stride, int repeat) { nttInst.ButterflyLayered(a.begin(), (size()>>stride)/repeat, stride, repeat); return *this; } Fps& intt(int stride, int repeat) { nttInst.IButterflyLayered(a.begin(), (size()>>stride)/repeat, stride, repeat); return times(Elem::raw((size()>>stride)/repeat).inv()); } Fps nttDouble(Fps vanilla) const { int n = size(); assert(n == (n&-n)); // n is a power of 2 Elem q = Elem::raw(zeta).pow((Elem::mod() - 1) / (n*2)); Elem qq = OneElem(); for(int i=0; i srcR = max(srcL, size()); // if resSz is unspecified -> resSz = destL + srcR - srcL Fps clip(int srcL, int srcR = -1, int destL = 0, int resSz = -1) const { srcR = RSZ(srcR); if(resSz < 0) resSz = destL + srcR - srcL; int rj = std::min(std::min(srcR, size()) - srcL, resSz - destL); Fps res(resSz); for(int j=std::max(0, -srcL); j b.size()) return convolution(b, a, sz); if(sz < 0) sz = std::max(0, a.size() + b.size() - 1); std::vector res(sz); for(int i=0; i=1; i--) a[i] = a[i-1] * comb.invOf(i); return set(0, ZeroElem()); } Fps log(int sz = -1){ RSZ(sz); assert(sz != 0); assert(a[0].val() == 1); return convolution(inv(sz), clip().difference(), sz-1).integral(); } Fps exp(int sz = -1){ RSZ(sz); Fps res = Fps(1).set(0, OneElem()); while(res.size() < sz){ auto z = res.size(); auto tmp = res.capSize(z*2).log().set(0, -OneElem()).move(); for(int i=0; i= (n-1) / k + 1) return Fps(n); Elem a0 = a[ctz]; return clip(ctz, ctz+n-ctz*k).times(a0.inv()).log().times(Elem(k)).exp().times(a0.pow(k)).clip(0, -1, ctz*k); } auto begin(){ return a.begin(); } auto end(){ return a.end(); } auto begin() const { return a.begin(); } auto end() const { return a.end(); } std::string toString(std::string beg = "[ ", std::string delim = " ", std::string en = " ]") const { std::string res = beg; bool f = false; for(auto x : a){ if(f){ res += delim; } f = true; res += std::to_string(x.val()); } res += en; return res; } std::vector getVectorMoved(){ return std::move(a); } Fps& operator+=(const Fps& r){ capSize(std::max(size(), r.size())); for(int i=0; i=0; i--) res = res * x + a[i]; return res; } }; template Comb FpsNtt::comb; template const NttInst FpsNtt::nttInst; } // namespace nachia #include namespace nachia{ // ax + by = gcd(a,b) // return ( x, - ) std::pair ExtGcd(long long a, long long b){ long long x = 1, y = 0; while(b){ long long u = a / b; std::swap(a-=b*u, b); std::swap(x-=y*u, y); } return std::make_pair(x, a); } } // namespace nachia namespace nachia{ template struct StaticModint{ private: using u64 = unsigned long long; unsigned int x; public: using my_type = StaticModint; template< class Elem > static Elem safe_mod(Elem x){ if(x < 0){ if(0 <= x+MOD) return x + MOD; return MOD - ((-(x+MOD)-1) % MOD + 1); } return x % MOD; } StaticModint() : x(0){} StaticModint(const my_type& a) : x(a.x){} StaticModint& operator=(const my_type&) = default; template< class Elem > StaticModint(Elem v) : x(safe_mod(v)){} unsigned int operator*() const noexcept { return x; } my_type& operator+=(const my_type& r) noexcept { auto t = x + r.x; if(t >= MOD) t -= MOD; x = t; return *this; } my_type operator+(const my_type& r) const noexcept { my_type res = *this; return res += r; } my_type& operator-=(const my_type& r) noexcept { auto t = x + MOD - r.x; if(t >= MOD) t -= MOD; x = t; return *this; } my_type operator-(const my_type& r) const noexcept { my_type res = *this; return res -= r; } my_type operator-() const noexcept { my_type res = *this; res.x = ((res.x == 0) ? 0 : (MOD - res.x)); return res; } my_type& operator*=(const my_type& r)noexcept { x = (u64)x * r.x % MOD; return *this; } my_type operator*(const my_type& r) const noexcept { my_type res = *this; return res *= r; } my_type pow(unsigned long long i) const noexcept { my_type a = *this, res = 1; while(i){ if(i & 1){ res *= a; } a *= a; i >>= 1; } return res; } my_type inv() const { return my_type(ExtGcd(x, MOD).first); } unsigned int val() const noexcept { return x; } static constexpr unsigned int mod() { return MOD; } static my_type raw(unsigned int val) noexcept { auto res = my_type(); res.x = val; return res; } my_type& operator/=(const my_type& r){ return operator*=(r.inv()); } my_type operator/(const my_type& r) const { return operator*(r.inv()); } }; } // namespace nachia #include #include #include namespace nachia{ struct CInStream{ private: static const unsigned int INPUT_BUF_SIZE = 1 << 17; unsigned int p = INPUT_BUF_SIZE; static char Q[INPUT_BUF_SIZE]; public: using MyType = CInStream; char seekChar(){ if(p == INPUT_BUF_SIZE){ size_t len = fread(Q, 1, INPUT_BUF_SIZE, stdin); if(len != INPUT_BUF_SIZE) Q[len] = '\0'; p = 0; } return Q[p]; } void skipSpace(){ while(isspace(seekChar())) p++; } private: template T nextUInt(){ if constexpr (sp) skipSpace(); T buf = 0; while(true){ char tmp = seekChar(); if('9' < tmp || tmp < '0') break; buf = buf * 10 + (tmp - '0'); p++; } return buf; } public: uint32_t nextU32(){ return nextUInt(); } int32_t nextI32(){ skipSpace(); if(seekChar() == '-'){ p++; return (int32_t)(-nextUInt()); } return (int32_t)nextUInt(); } uint64_t nextU64(){ return nextUInt();} int64_t nextI64(){ skipSpace(); if(seekChar() == '-'){ p++; return (int64_t)(-nextUInt()); } return (int64_t)nextUInt(); } template T nextInt(){ skipSpace(); if(seekChar() == '-'){ p++; return - nextUInt(); } return nextUInt(); } char nextChar(){ skipSpace(); char buf = seekChar(); p++; return buf; } std::string nextToken(){ skipSpace(); std::string buf; while(true){ char ch = seekChar(); if(isspace(ch) || ch == '\0') break; buf.push_back(ch); p++; } return buf; } MyType& operator>>(unsigned int& dest){ dest = nextU32(); return *this; } MyType& operator>>(int& dest){ dest = nextI32(); return *this; } MyType& operator>>(unsigned long& dest){ dest = nextU64(); return *this; } MyType& operator>>(long& dest){ dest = nextI64(); return *this; } MyType& operator>>(unsigned long long& dest){ dest = nextU64(); return *this; } MyType& operator>>(long long& dest){ dest = nextI64(); return *this; } MyType& operator>>(std::string& dest){ dest = nextToken(); return *this; } MyType& operator>>(char& dest){ dest = nextChar(); return *this; } } cin; struct FastOutputTable{ char LZ[1000][4] = {}; char NLZ[1000][4] = {}; constexpr FastOutputTable(){ using u32 = uint_fast32_t; for(u32 d=0; d<1000; d++){ LZ[d][0] = ('0' + d / 100 % 10); LZ[d][1] = ('0' + d / 10 % 10); LZ[d][2] = ('0' + d / 1 % 10); LZ[d][3] = '\0'; } for(u32 d=0; d<1000; d++){ u32 i = 0; if(d >= 100) NLZ[d][i++] = ('0' + d / 100 % 10); if(d >= 10) NLZ[d][i++] = ('0' + d / 10 % 10); if(d >= 1) NLZ[d][i++] = ('0' + d / 1 % 10); NLZ[d][i++] = '\0'; } } }; struct COutStream{ private: using u32 = uint32_t; using u64 = uint64_t; using MyType = COutStream; static const u32 OUTPUT_BUF_SIZE = 1 << 17; static char Q[OUTPUT_BUF_SIZE]; static constexpr FastOutputTable TB = FastOutputTable(); u32 p = 0; static constexpr u32 P10(u32 d){ return d ? P10(d-1)*10 : 1; } static constexpr u64 P10L(u32 d){ return d ? P10L(d-1)*10 : 1; } template static void Fil(T& m, U& l, U x){ m = l/x; l -= m*x; } public: void next_dig9(u32 x){ u32 y; Fil(y, x, P10(6)); nextCstr(TB.LZ[y]); Fil(y, x, P10(3)); nextCstr(TB.LZ[y]); nextCstr(TB.LZ[x]); } void nextChar(char c){ Q[p++] = c; if(p == OUTPUT_BUF_SIZE){ fwrite(Q, p, 1, stdout); p = 0; } } void nextEoln(){ nextChar('\n'); } void nextCstr(const char* s){ while(*s) nextChar(*(s++)); } void nextU32(uint32_t x){ u32 y = 0; if(x >= P10(9)){ Fil(y, x, P10(9)); nextCstr(TB.NLZ[y]); next_dig9(x); } else if(x >= P10(6)){ Fil(y, x, P10(6)); nextCstr(TB.NLZ[y]); Fil(y, x, P10(3)); nextCstr(TB.LZ[y]); nextCstr(TB.LZ[x]); } else if(x >= P10(3)){ Fil(y, x, P10(3)); nextCstr(TB.NLZ[y]); nextCstr(TB.LZ[x]); } else if(x >= 1) nextCstr(TB.NLZ[x]); else nextChar('0'); } void nextI32(int32_t x){ if(x >= 0) nextU32(x); else{ nextChar('-'); nextU32((u32)-x); } } void nextU64(uint64_t x){ u32 y = 0; if(x >= P10L(18)){ Fil(y, x, P10L(18)); nextU32(y); Fil(y, x, P10L(9)); next_dig9(y); next_dig9(x); } else if(x >= P10L(9)){ Fil(y, x, P10L(9)); nextU32(y); next_dig9(x); } else nextU32(x); } void nextI64(int64_t x){ if(x >= 0) nextU64(x); else{ nextChar('-'); nextU64((u64)-x); } } template void nextInt(T x){ if(x < 0){ nextChar('-'); x = -x; } if(!(0 < x)){ nextChar('0'); return; } std::string buf; while(0 < x){ buf.push_back('0' + (int)(x % 10)); x /= 10; } for(int i=(int)buf.size()-1; i>=0; i--){ nextChar(buf[i]); } } void writeToFile(bool flush = false){ fwrite(Q, p, 1, stdout); if(flush) fflush(stdout); p = 0; } COutStream(){ Q[0] = 0; } ~COutStream(){ writeToFile(); } MyType& operator<<(unsigned int tg){ nextU32(tg); return *this; } MyType& operator<<(unsigned long tg){ nextU64(tg); return *this; } MyType& operator<<(unsigned long long tg){ nextU64(tg); return *this; } MyType& operator<<(int tg){ nextI32(tg); return *this; } MyType& operator<<(long tg){ nextI64(tg); return *this; } MyType& operator<<(long long tg){ nextI64(tg); return *this; } MyType& operator<<(const std::string& tg){ nextCstr(tg.c_str()); return *this; } MyType& operator<<(const char* tg){ nextCstr(tg); return *this; } MyType& operator<<(char tg){ nextChar(tg); return *this; } } cout; char CInStream::Q[INPUT_BUF_SIZE]; char COutStream::Q[OUTPUT_BUF_SIZE]; } // namespace nachia #include using Modint = atcoder::static_modint<998244353>; using Fps = nachia::FpsNtt; using i64 = long long; using u64 = unsigned long long; int main(){ i64 X, Y, T, A, B, C, D; std::cin >> X >> Y >> T >> A >> B >> C >> D; A--; B--; C--; D--; i64 XX=1<<(X+1), YY=1<<(Y+1); Fps f(XX*YY); f[0] = 1; f[1] = 1; f[YY-1] = 1; f[YY] = 1; f[(XX-1)*YY] = 1; T %= Modint::mod() - 1; f.ntt(0, XX).ntt(Y+1, 1); for(int i=0; i i64 { i64 dx = (x + XX - x0) % XX; i64 dy = (y + YY - y0) % YY; return dx * YY + dy; }; Modint ans = 0; ans += f[diffIndex(A, B, C, D)]; ans -= f[diffIndex(XX-2-A, B, C, D)]; ans -= f[diffIndex(A, YY-2-B, C, D)]; ans += f[diffIndex(XX-2-A, YY-2-B, C, D)]; std::cout << ans.val() << '\n'; return 0; }