結果

問題 No.2954 Calculation of Exponentiation
ユーザー Taiki0715Taiki0715
提出日時 2024-11-08 22:29:23
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 5,144 bytes
コンパイル時間 5,470 ms
コンパイル使用メモリ 309,668 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-11-08 22:29:42
合計ジャッジ時間 6,527 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 AC 2 ms
5,248 KB
testcase_06 AC 2 ms
5,248 KB
testcase_07 AC 2 ms
5,248 KB
testcase_08 AC 2 ms
5,248 KB
testcase_09 AC 2 ms
5,248 KB
testcase_10 WA -
testcase_11 WA -
testcase_12 WA -
testcase_13 AC 2 ms
5,248 KB
testcase_14 AC 2 ms
5,248 KB
testcase_15 AC 2 ms
5,248 KB
testcase_16 AC 2 ms
5,248 KB
testcase_17 AC 2 ms
5,248 KB
testcase_18 AC 2 ms
5,248 KB
testcase_19 AC 2 ms
5,248 KB
testcase_20 AC 2 ms
5,248 KB
testcase_21 AC 2 ms
5,248 KB
testcase_22 AC 2 ms
5,248 KB
testcase_23 AC 2 ms
5,248 KB
testcase_24 AC 2 ms
5,248 KB
testcase_25 AC 2 ms
5,248 KB
testcase_26 AC 2 ms
5,248 KB
testcase_27 AC 2 ms
5,248 KB
testcase_28 AC 3 ms
5,248 KB
testcase_29 AC 2 ms
5,248 KB
testcase_30 AC 2 ms
5,248 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
#endif
using ll=long long;
using ull=unsigned long long;
using P=pair<ll,ll>;
template<typename T>using minque=priority_queue<T,vector<T>,greater<T>>;
template<typename T>bool chmax(T &a,const T &b){return (a<b?(a=b,true):false);}
template<typename T>bool chmin(T &a,const T &b){return (a>b?(a=b,true):false);}
template<typename T1,typename T2>istream &operator>>(istream &is,pair<T1,T2>&p){is>>p.first>>p.second;return is;}
template<typename T>istream &operator>>(istream &is,vector<T> &a){for(auto &i:a)is>>i;return is;}
template<typename T1,typename T2>void operator++(pair<T1,T2>&a,int n){a.first++,a.second++;}
template<typename T1,typename T2>void operator--(pair<T1,T2>&a,int n){a.first--,a.second--;}
template<typename T>void operator++(vector<T>&a,int n){for(auto &i:a)i++;}
template<typename T>void operator--(vector<T>&a,int n){for(auto &i:a)i--;}
#define reps(i,a,n) for(int i=(a);i<int(n);i++)
#define rep(i,n) reps(i,0,n)
#define all(x) x.begin(),x.end()
#define pcnt(x) __builtin_popcountll(x)
#define fin(x) return cout<<(x)<<'\n',static_cast<void>(0)
ll myceil(ll a,ll b){return (a+b-1)/b;}
template<typename T,size_t n,size_t id=0>
auto vec(const int (&d)[n],const T &init=T()){
  if constexpr (id<n)return vector(d[id],vec<T,n,id+1>(d,init));
  else return init;
}
#ifdef LOCAL
#include<debug.h>
#else
#define debug(...) static_cast<void>(0)
#define debugg(...) static_cast<void>(0)
template<typename T1,typename T2>ostream &operator<<(ostream &os,const pair<T1,T2>&p){os<<p.first<<' '<<p.second;return os;}
#endif
void SOLVE();
int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  cout<<fixed<<setprecision(16);
  #ifdef LOCAL
  clock_t start=clock();
  #endif
  int testcase=1;
  //cin>>testcase;
  for(int i=0;i<testcase;i++){
    SOLVE();
  }
  #ifdef LOCAL
  cerr<<"time:";
  cerr<<(clock()-start)/1000;
  cerr<<"ms\n";
  #endif
}
template<typename T>
struct fraction{
  T num,den;
  void simple(){
    T g=gcd(num,den);
    this->num/=g;
    this->den/=g;
  }
  fraction():num(0),den(1){}
  fraction(T a):num(a),den(1){}
  fraction(T a,T b):num(a),den(b){
    this->simple();
    if(this->den<0)this->num*=-1,this->den*=-1;
  }
  static fraction raw(T a,T b){
    fraction ret;
    ret.num=a;
    ret.den=b;
    return ret;
  }
  friend fraction operator+(const fraction &a){return a;}
  friend fraction operator-(const fraction &a){return fraction::raw(-a.num,a.den);}
  friend fraction operator+(const fraction &a,const fraction &b){
    return fraction(a.num*b.den+b.num*a.den,a.den*b.den);
  }
  friend fraction operator-(const fraction &a,const fraction &b){
    return fraction(a.num*b.den-b.num*a.den,a.den*b.den);
  }
  friend fraction operator*(const fraction &a,const fraction &b){
    fraction c(a.num,b.den),d(b.num,a.den);
    c.num*=d.num;
    c.den*=d.den;
    return c;
  }
  friend fraction operator/(const fraction &a,const fraction &b){
    fraction c(a.num,b.num),d(b.den,a.den);
    c.num*=d.num;
    c.den*=d.den;
    if(c.den<0){
      c.num*=-1;
      c.den*=-1;
    }
    return c;
  }
  friend bool operator==(const fraction &a,const fraction &b){
    return a.num==b.num&&a.den==b.den;
  }
  friend bool operator!=(const fraction &a,const fraction &b){
    return !(a==b);
  }
  friend bool operator<(const fraction &a,const fraction &b){
    return a.num*b.den<b.num*a.den;
  }
  friend bool operator>(const fraction &a,const fraction &b){
    return a.num*b.den>b.num*a.den;
  }
  friend bool operator<=(const fraction &a,const fraction &b){
    return !(a>b);
  }
  friend bool operator>=(const fraction &a,const fraction &b){
    return !(a<b);
  }
  fraction &operator=(const fraction &a)=default;
  fraction &operator+=(const fraction &a){return *this=*this+a;}
  fraction &operator-=(const fraction &a){return *this=*this-a;}
  fraction &operator*=(const fraction &a){return *this=*this*a;}
  fraction &operator/=(const fraction &a){return *this=*this/a;}
  inline fraction inv() const{
    if(this->num>=0)return fraction::raw(this->den,this->num);
    else return fraction::raw(-this->den,-this->num);
  }
  friend ostream &operator<<(ostream &os,const fraction &a){
    os<<a.num<<' '<<a.den;
    return os;
  }
};
template<typename T>
fraction<T>abs(fraction<T>x){
  return x>=0?x:-x;
}
void SOLVE(){
  fraction<ll>a,b;
  auto input=[]()->fraction<ll> {
    string s;
    cin>>s;
    s.erase(s.begin()+s.find('.'));
    return fraction<ll>(stoll(s),10000);
  };
  a=input(),b=input();
  if(b==0)fin("Yes");
  if(b<0)fin(a==1?"Yes":"No");
  if(a.den!=1)fin("No");
  if(b.den==1)fin("Yes");
  if(b.den>20)fin("No");
  debug(a,b);
  //assume a is integer,1<den(b)<=20
  ll ai=a.num;
  ll bi=b.num,bj=b.den;
  debug(bj);
  auto powi=[](ll a,ll b)->ll {
    assert(a<=1e9);
    ll res=1;
    while(b--){
      res*=a;
      if(res>1e9)return 1e18;
    }
    return res;
  };
  ll root_a=[&](){
    ll ok=0,ng=ai+1;
    while(ng-ok>1){
      ll mid=(ok+ng)/2;
      (powi(mid,bj)<=ai?ok:ng)=mid;
    }
    return ok;
  }();
  cout<<(powi(root_a,bj)==a?"Yes":"No")<<endl;
}
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