結果
| 問題 |
No.2017 Mod7 Parade
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-07-12 18:46:55 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 706 ms / 2,000 ms |
| コード長 | 4,793 bytes |
| コンパイル時間 | 4,503 ms |
| コンパイル使用メモリ | 296,484 KB |
| 実行使用メモリ | 50,944 KB |
| 最終ジャッジ日時 | 2025-07-12 18:47:10 |
| 合計ジャッジ時間 | 13,755 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 18 |
ソースコード
#include<bits/stdc++.h>
#if __has_include(<atcoder/all>)
#include<atcoder/modint>
#endif
using namespace std;
#define LL(...) ll __VA_ARGS__;lin(__VA_ARGS__)
#define RDVV(T,n,...) vec<T>__VA_ARGS__;fe(refs(__VA_ARGS__),e)e.get().resizes(n);vin(__VA_ARGS__)
#define VV(n,...) RDVV(ll,n,__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__);i<i##stop;i+=i##step)
#define fe(a,e,...) for(auto&&__VA_OPT__([)e __VA_OPT__(,__VA_ARGS__]):a)
#define defpp void pp(const auto&...a){const char*c="";((cout<<c<<a,c=" "),...);cout<<'\n';}
#define entry defpp void main();void main2();}int main(){my::io();my::main();}namespace my{
#define use_ml1000000007 using ml=atcoder::modint1000000007;
namespace my{
auto&operator<<(ostream&o,const atcoder::modint1000000007&x){return o<<(int)x.val();}
void io(){cin.tie(nullptr)->sync_with_stdio(0);cout<<fixed<<setprecision(15);}
using ll=long long;
using i64=int64_t;
using ui64=uint64_t;
using ui128=__uint128_t;
constexpr auto refs(auto&...a){return array{ref(a)...};}
constexpr auto for_range(ll s,ll b){ll a=0;if(s)swap(a,b);return array{a-s,b,1-s*2};}
void lin(auto&...a){(cin>>...>>a);}
void vin(auto&...a){fo(i,(a.size()&...))(cin>>...>>a[i]);}
constexpr ll size2(auto x){x|=1;ll r=0;while(x>0)x>>=1,++r;return r;}
auto&rev(auto&a){ranges::reverse(a);return a;}
template<class...A>using pack_back_t=tuple_element_t<sizeof...(A)-1,tuple<A...>>;
}
namespace my{
template<class V>concept vectorial=is_base_of_v<vector<typename remove_cvref_t<V>::value_type>,remove_cvref_t<V>>;
template<class V>constexpr int depth=0;
template<vectorial V>constexpr int depth<V> =depth<typename V::value_type>+1;
template<class T>struct core_t_helper{using type=T;};
template<vectorial V>struct core_t_helper<V>{using type=typename core_t_helper<typename V::value_type>::type;};
template<class T>using core_t=core_t_helper<T>::type;
template<class V>struct vec;
template<int D,class T>struct hvec_helper{using type=vec<typename hvec_helper<D-1,T>::type>;};
template<class T>struct hvec_helper<0,T>{using type=T;};
template<int D,class T>using hvec=hvec_helper<D,T>::type;
template<class V>struct vec:vector<V>{
static constexpr int D=depth<vec<V>>;
using C=core_t<V>;
using vector<V>::vector;
vec(const auto&...a)requires(sizeof...(a)>=3){resizes(a...);}
void resizes(const auto&...a){if constexpr(sizeof...(a)==D)*this=make(a...,C{});else*this=make(a...);}
static auto make(ll n,const auto&...a){
if constexpr(sizeof...(a)==1)return vec<C>(n,array{a...}[0]);
else return vec<decltype(make(a...))>(n,make(a...));
}
ll size()const{return vector<V>::size();}
};
template<class...A>requires(sizeof...(A)>=2)vec(const A&...a)->vec<hvec<sizeof...(A)-2,pack_back_t<A...>>>;
vec(ll)->vec<ll>;
}
namespace my{
template<int tag>struct 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){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;}
ui64 val()const{return reduce(a);}
};
}
namespace my{
template<class T>struct pow_doubling:vec<T>{
pow_doubling(T a,ll n):vec<T>(n+1,a){fo(i,n)(*this)[i+1]=(*this)[i]*(*this)[i];}
T operator()(ll k)const{
T res=1;
fo(i,size2(k))if(k>>i&1)res*=(*this)[i];
return res;
}
};
template<class T>struct pow10_doubling:pow_doubling<T>{
vec<T>repunit_table;
pow10_doubling(ll n):pow_doubling<T>(10,n),repunit_table(n+2,1){fo(i,n+1)repunit_table[i+1]=((*this)[i]+1)*repunit_table[i];}
T repunit(ll k)const{
T res=0;
fo(i,size2(k))if(k>>i&1)res=res*(*this)[i]+repunit_table[i];
return res;
}
};
}
namespace my{entry
void main(){
LL(N);
VV(N,D,L);
rev(D);
rev(L);
using mod7=montgomery64<__COUNTER__>;
mod7::set_mod(7);
pow10_doubling<mod7>pow10(30);
use_ml1000000007
vec dp(N+1,6,7,ml{});
dp[0][0][0]=1;
fo(i,N){
fo(j,6){
fo(k,7){
dp[i+1][j][k]+=dp[i][j][k];
dp[i+1][(j+L[i])%6][(pow10.repunit(L[i])*D[i]*pow10(j)+k).val()]+=dp[i][j][k];
}
}
}
ml ans=0;
fo(j,6)fo(k,7)ans+=dp[N][j][k]*k;
pp(ans);
}}