結果
| 問題 | No.1819 Mirrored 2 | 
| コンテスト | |
| ユーザー |  Chanyuh | 
| 提出日時 | 2022-01-25 11:35:25 | 
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 5 ms / 2,000 ms | 
| コード長 | 4,041 bytes | 
| コンパイル時間 | 1,145 ms | 
| コンパイル使用メモリ | 126,308 KB | 
| 最終ジャッジ日時 | 2025-01-27 15:13:03 | 
| ジャッジサーバーID (参考情報) | judge5 / judge5 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 1 | 
| other | AC * 26 | 
コンパイルメッセージ
main.cpp:137:8: warning: built-in function ‘pow10’ declared as non-function [-Wbuiltin-declaration-mismatch]
  137 | modint pow10[100010];
      |        ^~~~~
            
            ソースコード
#include<iostream>
#include<array>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<tuple>
#include<cassert>
using namespace std;
typedef long long ll;
const ll mod = 90007;
const ll INF = (ll)1000000007 * 1000000007;
typedef pair<int, int> P;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define Per(i,sta,n) for(int i=n-1;i>=sta;i--)
typedef long double ld;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ll, ll> LP;
int dx[4]={1,-1,0,0};
int dy[4]={0,0,1,-1};
template<class T>bool chmax(T &a, const T &b) {if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T &a, const T &b) {if(b<a){a=b;return 1;}return 0;}
template<int mod>
struct ModInt {
    long long x;
    static constexpr int MOD = mod;
 
    ModInt() : x(0) {}
    ModInt(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
    explicit operator int() const {return x;}
 
    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; }
    ModInt operator%(const ModInt &p) const { return ModInt(0); }         
 
    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;
            a -= t * b;
            swap(a, b);
            u -= t * v;
            swap(u, v);
        }
        return ModInt(u);
    }
    ModInt power(long long n) const {
        ModInt ret(1), mul(x);
        while(n > 0) {
            if(n & 1)
            ret *= mul;
            mul *= mul;
            n >>= 1;
        }
        return ret;
    }
    ModInt power(const ModInt p) const{
        return ((ModInt)x).power(p.x);
    }
    friend ostream &operator<<(ostream &os, const ModInt<mod> &p) {
        return os << p.x;
    }
    friend istream &operator>>(istream &is, ModInt<mod> &a) {
        long long x;
        is >> x;
        a = ModInt<mod>(x);
        return (is);
    }
};
using modint = ModInt<mod>;
ll Q,x,y;
ll rev(ll s){
    vector<ll> v;
    while(s>0){
        v.push_back(s%10);
        s/=10;
    }
    //reverse(v.begin(),v.end());
    ll res=0;
    for(ll t:v){
        //cout << t << endl;
        res+=t;
        res*=10;
    }
    return res/10;
}
modint pow10[100010];
void solve(){
    ll P_;
    cin >> P_ >> Q >> x >> y;
    pow10[0]=1;
    rep(i,mod){
        pow10[i+1]=pow10[i]*10;
    }
    if(mod!=Q){
        while(y%10==0){
            y+=Q;
        }
        modint p=(modint)x/(modint)rev(y);
        rep(k,mod){
            if(p==pow10[k]){
                cout << rev(y) << "";
                rep(i,k) cout << "0";
                cout << "" << endl;
                return;
            }
        }
    }
    while(true){
        if(rev(x)%mod==y){
            cout << x << endl;
            return;
        }
        x+=mod;
    }
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << fixed << setprecision(50);
    solve();
}
            
            
            
        