#include #if __has_include() #include #endif using namespace std; #define eb emplace_back #define done(...) return pp(__VA_ARGS__) #define LL(...) ll __VA_ARGS__;lin(__VA_ARGS__) #define FO(n) for(ll IJK=n;IJK-->0;) #define fo(i,...) for(auto[i,i##stop,i##step]=for_range(0,__VA_ARGS__);isync_with_stdio(0);cout<>...>>a);} constexpr auto pow(auto x,ll n,auto e){assert(n>=0);decltype(x)r=e;for(;n;x*=x,n>>=1)if(n&1)r*=x;return r;} constexpr auto pow(auto x,ll n){return pow(x,n,1);} ll rand(){static ll x=495;x^=x<<7;x^=x>>9;return x;} ll rand(ll l,ll r=0){if(l>r)swap(l,r);return rand()%(r-l)+l;} templatestruct pair{ A a;B b; pair()=default; pair(A aa,B bb):a(aa),b(bb){} auto operator<=>(const pair&)const=default; }; templateusing pack_back_t=tuple_element_t>; } namespace my{ templatestruct vec; templatestruct hvec_helper{using type=vec::type>;}; templatestruct hvec_helper<0,T>{using type=T;}; templateusing hvec=hvec_helper::type; templatestruct vec:vector{ using vector::vector; ll size()const{return vector::size();} auto&emplace_back(auto&&...a){vector::emplace_back(std::forward(a)...);return*this;} template>auto sort(F f={})const{vec v=*this;ranges::sort(v,f);return v;} auto rle()const{vec>r;fe(*this,e)if(r.size()&&e==r.back().a)++r.back().b;else r.eb(e,1);return r;} auto rce()const{return sort().rle();} }; templaterequires(sizeof...(A)>=2)vec(const A&...a)->vec>>; } namespace my{ templatestruct montgomery64{ using modular=montgomery64; static inline ui64 N=998244353; static inline ui64 N_inv=996491785301655553ull; static inline ui64 R2=299560064; static int set_mod(ui64 N){ if(modular::N==N)return 0; assert(N<(1ull<<63)); assert(N&1); modular::N=N; R2=-ui128(N)%N; N_inv=N; FO(5)N_inv*=2-N*N_inv; assert(N*N_inv==1); return 0; } ui64 a; montgomery64(const i64&a=0):a(reduce((ui128)(a%(i64)N+N)*R2)){} static ui64 reduce(const ui128&T){ui128 r=(T+ui128(ui64(T)*-N_inv)*N)>>64;return r>=N?r-N:r;} auto&operator+=(const modular&b){if((a+=b.a)>=N)a-=N;return*this;} auto&operator-=(const modular&b){if(i64(a-=b.a)<0)a+=N;return*this;} auto&operator*=(const modular&b){a=reduce(ui128(a)*b.a);return*this;} friend auto operator+(const modular&a,const modular&b){return modular{a}+=b;} friend auto operator-(const modular&a,const modular&b){return modular{a}-=b;} friend auto operator*(const modular&a,const modular&b){return modular{a}*=b;} friend bool operator==(const modular&a,const modular&b){return a.a==b.a;} modular pow(ui128 n)const{return my::pow(*this,n);} ui64 val()const{return reduce(a);} }; } namespace my{ bool miller_rabin(ll n,vecas){ ll d=n-1; while(~d&1)d>>=1; using modular=montgomery64<__COUNTER__>; modular::set_mod(n); modular one=1,minus_one=n-1; fe(as,a){ if(a%n==0)continue; ll t=d; modular y=modular(a).pow(t); while(t!=n-1&&y!=one&&y!=minus_one)y*=y,t<<=1; if(y!=minus_one&&~t&1)return 0; } return 1; } bool is_prime(ll n){ if(~n&1)return n==2; if(n<=1)return 0; if(n<4759123141LL)return miller_rabin(n,{2,7,61}); return miller_rabin(n,{2,325,9375,28178,450775,9780504,1795265022}); } ll pollard_rho(ll n){ if(~n&1)return 2; if(is_prime(n))return n; using modular=montgomery64<__COUNTER__>; modular::set_mod(n); modular R,one=1; auto f=[&](const modular&x){return x*x+R;}; while(1){ modular x,y,ys,q=one; R=rand(2,n),y=rand(2,n); ll g=1; constexpr ll m=128; for(ll r=1;g==1;r<<=1){ x=y; FO(r)y=f(y); for(ll k=0;g==1&&k0); vecres; auto f=[&](auto&f,ll m){ if(m==1)return; auto d=pollard_rho(m); if(d==m)res.eb(d); else f(f,d),f(f,m/d); }; f(f,n); return res.rce(); } } namespace my{entry void main(){ multiple_testcases LL(N,M); if(N>=M)done(0); use_ml ml::set_mod(M); if(M<=2e5){ ml t=1; fo(i,1,N+1)t*=i; done(t); } if(is_prime(M)){ ml::set_mod(M); ml t=1; fo(i,N+1,M)t*=i; done(-t.inv()); }else{ auto fa=factorize(M); if(fa.size()>1){ done(0); }else{ //Mは素数の累乗 if(N>=fa[0].a*fa[0].b){ done(0); }else{ ml t=1; fo(i,1,N+1)t*=i; done(t); } } } }}