結果
| 問題 | No.1417 100の倍数かつ正整数(2) | 
| コンテスト | |
| ユーザー |  mugen_1337 | 
| 提出日時 | 2021-03-07 13:10:47 | 
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 6 ms / 3,000 ms | 
| コード長 | 4,232 bytes | 
| コンパイル時間 | 2,080 ms | 
| コンパイル使用メモリ | 204,936 KB | 
| 最終ジャッジ日時 | 2025-01-19 12:35:14 | 
| ジャッジサーバーID (参考情報) | judge5 / judge2 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 3 | 
| other | AC * 36 | 
ソースコード
#include<bits/stdc++.h>
using namespace std;
#define ALL(x) begin(x),end(x)
#define rep(i,n) for(int i=0;i<(n);i++)
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define mod 1000000007
using ll=long long;
const int INF=1000000000;
const ll LINF=1001002003004005006ll;
int dx[]={1,0,-1,0},dy[]={0,1,0,-1};
// ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return true;}return false;}
struct IOSetup{
    IOSetup(){
        cin.tie(0);
        ios::sync_with_stdio(0);
        cout<<fixed<<setprecision(12);
    }
} iosetup;
 
template<typename T>
ostream &operator<<(ostream &os,const vector<T>&v){
    for(int i=0;i<(int)v.size();i++) os<<v[i]<<(i+1==(int)v.size()?"":" ");
    return os;
}
template<typename T>
istream &operator>>(istream &is,vector<T>&v){
    for(T &x:v)is>>x;
    return is;
}
template<ll Mod>
struct ModInt{
    long long x;
    ModInt():x(0){}
    ModInt(long long y):x(y>=0?y%Mod:(Mod-(-y)%Mod)%Mod){}
    ModInt &operator+=(const ModInt &p){
        if((x+=p.x)>=Mod) x-=Mod;
        return *this;
    }
    ModInt &operator-=(const ModInt &p){
        if((x+=Mod-p.x)>=Mod)x-=Mod;
        return *this;
    }
    ModInt &operator*=(const ModInt &p){
        x=(int)(1ll*x*p.x%Mod);
        return *this;
    }
    ModInt &operator/=(const ModInt &p){
        (*this)*=p.inverse();
        return *this;
    }
    ModInt operator-()const{return ModInt(-x);}
    ModInt operator+(const ModInt &p)const{return ModInt(*this)+=p;}
    ModInt operator-(const ModInt &p)const{return ModInt(*this)-=p;}
    ModInt operator*(const ModInt &p)const{return ModInt(*this)*=p;}
    ModInt operator/(const ModInt &p)const{return ModInt(*this)/=p;}
    bool operator==(const ModInt &p)const{return x==p.x;}
    bool operator!=(const ModInt &p)const{return x!=p.x;}
    ModInt inverse()const{
        int a=x,b=Mod,u=1,v=0,t;
        while(b>0){
            t=a/b;
            swap(a-=t*b,b);swap(u-=t*v,v);
        }
        return ModInt(u);
    }
    ModInt pow(long long n)const{
        ModInt ret(1),mul(x);
        while(n>0){
            if(n&1) ret*=mul;
            mul*=mul;n>>=1;
        }
        return ret;
    }
    friend ostream &operator<<(ostream &os,const ModInt &p){return os<<p.x;}
    friend istream &operator>>(istream &is,ModInt &a){long long t;is>>t;a=ModInt<Mod>(t);return (is);}
    static int get_mod(){return Mod;}
};
using mint=ModInt<1000000007>;
/*
1, 2, 4
5, 10, 20
25, 50, 100
*/
vector<int> to2{1,2,2,4,5,5,7,8,8};
vector<int> to5{3,4,5,6,7,8,6,7,8};
vector<int> to4{2,2,2,5,5,5,8,8,8};
signed main(){
    string s;cin>>s;
    int n=(int)s.size();
    reverse(ALL(s));
    vector<vector<vector<mint>>> dp(n+1,vector<vector<mint>>(2,vector<mint>(9,0)));
    dp[n][0][0]=1;
    for(int i=n-1;i>=0;i--){
        int dig=s[i]-'0';
        rep(k,9){
            dp[i][1][to2[k]]+=dp[i+1][1][k];
            dp[i][1][to4[k]]+=dp[i+1][1][k];
            dp[i][1][to5[k]]+=dp[i+1][1][k];
            dp[i][1][to2[k]]+=dp[i+1][1][k];
            dp[i][1][to4[k]]+=dp[i+1][1][k];
            dp[i][1][k]+=dp[i+1][1][k]*(9-5);
            if(dig==2)      dp[i][0][to2[k]]+=dp[i+1][0][k];
            else if(dig==4) dp[i][0][to4[k]]+=dp[i+1][0][k];
            else if(dig==5) dp[i][0][to5[k]]+=dp[i+1][0][k];
            else if(dig==6) dp[i][0][to2[k]]+=dp[i+1][0][k];
            else if(dig==8) dp[i][0][to4[k]]+=dp[i+1][0][k];
            else if(dig!=0) dp[i][0][k]+=dp[i+1][0][k];
            if(2<dig) dp[i][1][to2[k]]+=dp[i+1][0][k];
            if(4<dig) dp[i][1][to4[k]]+=dp[i+1][0][k];
            if(5<dig) dp[i][1][to5[k]]+=dp[i+1][0][k];
            if(6<dig) dp[i][1][to2[k]]+=dp[i+1][0][k];
            if(8<dig) dp[i][1][to4[k]]+=dp[i+1][0][k];
            if(dig<=1) continue;
            int t=dig-1;
            if(2<dig) t--;
            if(4<dig) t--;
            if(5<dig) t--;
            if(6<dig) t--;
            if(8<dig) t--;
            
            dp[i][1][k]+=dp[i+1][0][k]*t;
        }
        dp[i][1][0]+=1;// leading 0
    }
    cout<<dp[0][0][8]+dp[0][1][8]<<endl;
    return 0;
}
            
            
            
        