#line 2 "cpplib/util/template.hpp" #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #pragma GCC target("avx") #include using namespace std; struct __INIT__{__INIT__(){cin.tie(0);ios::sync_with_stdio(false);cout< vec; typedef vector> mat; typedef vector>> mat3; typedef vector svec; typedef vector> smat; templateinline void output(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<inline void output2(T t){for(auto i:t)output(i);} templateinline void debug(T t){bool f=0;for(auto i:t){cerr<<(f?" ":"")<inline void debug2(T t){for(auto i:t)output(i);} #define loop(n) for(long long _=0;_<(long long)(n);++_) #define rep(i,...) for(auto i:range(__VA_ARGS__)) #define rrep(i,...) for(auto i:reversed(range(__VA_ARGS__))) #define repi(i,a,b) for(lint i=lint(a);i<(lint)(b);++i) #define rrepi(i,a,b) for(lint i=lint(b)-1;i>=lint(a);--i) #define irep(i) for(lint i=0;;++i) inline vector range(long long n){if(n<=0)return vector();vectorv(n);iota(v.begin(),v.end(),0LL);return v;} inline vector range(long long a,long long b){if(b<=a)return vector();vectorv(b-a);iota(v.begin(),v.end(),a);return v;} inline vector range(long long a,long long b,long long c){if((b-a+c-1)/c<=0)return vector();vectorv((b-a+c-1)/c);for(int i=0;i<(int)v.size();++i)v[i]=i?v[i-1]+c:a;return v;} templateinline T reversed(T v){reverse(v.begin(),v.end());return v;} #define all(n) begin(n),end(n) templatebool chmin(T& s,const E& t){bool res=s>t;s=min(s,t);return res;} templatebool chmax(T& s,const E& t){bool res=s(s,t);return res;} const vector dx={1,0,-1,0,1,1,-1,-1}; const vector dy={0,1,0,-1,1,-1,1,-1}; #define SUM(v) accumulate(all(v),0LL) templateauto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector(arg,x);else return vector(arg,make_vector(x,args...));} #define extrep(v,...) for(auto v:__MAKE_MAT__({__VA_ARGS__})) vector> __MAKE_MAT__(vector v){if(v.empty())return vector>(1,vector());long long n=v.back();v.pop_back();vector> ret;vector> tmp=__MAKE_MAT__(v);for(auto e:tmp)for(long long i=0;i data; int sz; public: UF(int sz):sz(sz){data.resize(sz,-1);} bool unite(int x,int y){ x=root(x);y=root(y); if(x==y)return 0; if(data[x]>data[y])swap(x,y); data[x]+=data[y]; data[y]=x; sz--; return 1; } inline int root(int x){return data[x]<0?x:data[x]=root(data[x]);} inline bool same(int x, int y){return root(x)==root(y);} inline int size(){return sz;} inline int size(int x){return -data[root(x)];} }; #line 5 "cpplib/math/mod_int.hpp" /** * @brief ModInt */ template struct mod_int { using mint=mod_int; using u64 = std::uint_fast64_t; u64 a; constexpr mod_int(const long long x = 0)noexcept:a(x>=0?x%get_mod():get_mod()-(-x)%get_mod()){} constexpr u64 &value()noexcept{return a;} constexpr const u64 &value() const noexcept {return a;} constexpr mint operator+(const mint rhs)const noexcept{return mint(*this) += rhs;} constexpr mint operator-(const mint rhs)const noexcept{return mint(*this)-=rhs;} constexpr mint operator*(const mint rhs) const noexcept {return mint(*this) *= rhs;} constexpr mint operator/(const mint rhs) const noexcept {return mint(*this) /= rhs;} constexpr mint &operator+=(const mint rhs) noexcept { a += rhs.a; if (a >= get_mod())a -= get_mod(); return *this; } constexpr mint &operator-=(const mint rhs) noexcept { if (a= get_mod())a -= get_mod(); return *this; } constexpr mint operator--(int) noexcept { if (a<1)a += get_mod(); a -= 1; return *this; } constexpr mint &operator/=(mint rhs) noexcept { u64 exp=get_mod()-2; while (exp) { if (exp % 2) { *this *= rhs; } rhs *= rhs; exp /= 2; } return *this; } constexpr bool operator==(mint x) noexcept { return a==x.a; } constexpr bool operator!=(mint x) noexcept { return a!=x.a; } constexpr bool operator<(mint x) noexcept { return a(mint x) noexcept { return a>x.a; } constexpr bool operator<=(mint x) noexcept { return a<=x.a; } constexpr bool operator>=(mint x) noexcept { return a>=x.a; } constexpr static int root(){ mint root = 2; while(root.pow((get_mod()-1)>>1).a==1)root++; return root.a; } constexpr mint pow(long long n)const{ long long x=a; mint ret = 1; while(n>0) { if(n&1)(ret*=x); (x*=x)%=get_mod(); n>>=1; } return ret; } constexpr mint inv(){ return pow(get_mod()-2); } static std::vector fac; static std::vector ifac; static bool init; constexpr static int mx=10000001; void build()const{ init=0; fac.resize(mx); ifac.resize(mx); fac[0]=1,ifac[0]=1; for(int i=1;i=0;i--)ifac[i]=ifac[i+1]*(i+1); } mint comb(long long b){ if(init)build(); if(a==0&&b==0)return 1; if((long long)a>(std::istream& lhs,mint& rhs) noexcept { lhs >> rhs.a; return lhs; } constexpr static u64 get_mod(){ return MOD; } }; templatestd::vector> mod_int::fac; templatestd::vector> mod_int::ifac; templatebool mod_int::init=1; #line 3 "cpplib/math/mod_int1000000007.hpp" using mint=mod_int<1'000'000'007>; /** * @brief ModInt(1'000'000'007) */ #line 4 "code.cpp" int main(){ // lint n; // cin>>n; // vec a(n); // vec x(n),y(n); // auto dist=[](lint i,lint j){ // return sqrtl((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j])); // }; // rep(i,n){ // cin>>x[i]>>y[i]; // } // rep() lint n,l,r; cin>>n>>l>>r; vec list; if(l==1)list.push_back(1); { vec dp={1,1}; while(dp[dp.size()-2]+dp.back()<=r){ dp.push_back(dp[dp.size()-2]+dp.back()); if(l<=dp.back())list.push_back(dp.back()); } } setng; sets; for(auto e:list){ string st=to_string(e); ng.emplace(to_string(e)); rep(i,st.size()+1){ s.emplace(st.substr(0,i)); } } vector>dp(n+1); dp[0][""]=1; auto ok=[&](string st){ rep(i,st.size()){ if(ng.count(st.substr(i,st.size())))return 0; } return 1; }; auto scare=[&](string st){ while(!s.count(st))st.erase(st.begin()); return st; }; mint ans=0; rep(i,n){ for(auto [s,t]:dp[i]){ rep(j,'0','9'+1){ if(!ok(s+char(j)))continue; dp[i+1][scare(s+char(j))]+=t; } } } for(auto [s,t]:dp[n]){ ans+=t; } cout<