#140872 (C++14) No.473 和と積の和

提出ソース

結果

問題	No.473 和と積の和
ユーザー	shimomire
提出日時	2016-12-23 02:17:09
言語	C++14 (gcc 13.2.0 + boost 1.83.0)
結果	AC
実行時間	249 ms / 3,000 ms
コード長	5,183 bytes
コンパイル時間	1,505 ms
コンパイル使用メモリ	129,212 KB
実行使用メモリ	4,384 KB
最終ジャッジ日時	2023-08-22 08:34:45
合計ジャッジ時間	4,533 ms
ジャッジサーバーID （参考情報）	judge12 / judge11

このコードへのチャレンジ（β）

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	1 ms 4,376 KB
testcase_01	AC	2 ms 4,380 KB
testcase_02	AC	1 ms 4,380 KB
testcase_03	AC	232 ms 4,376 KB
testcase_04	AC	1 ms 4,376 KB
testcase_05	AC	1 ms 4,376 KB
testcase_06	AC	2 ms 4,384 KB
testcase_07	AC	1 ms 4,380 KB
testcase_08	AC	1 ms 4,380 KB
testcase_09	AC	1 ms 4,380 KB
testcase_10	AC	1 ms 4,376 KB
testcase_11	AC	2 ms 4,380 KB
testcase_12	AC	1 ms 4,376 KB
testcase_13	AC	2 ms 4,376 KB
testcase_14	AC	2 ms 4,376 KB
testcase_15	AC	1 ms 4,380 KB
testcase_16	AC	2 ms 4,380 KB
testcase_17	AC	1 ms 4,380 KB
testcase_18	AC	2 ms 4,376 KB
testcase_19	AC	1 ms 4,376 KB
testcase_20	AC	2 ms 4,376 KB
testcase_21	AC	1 ms 4,380 KB
testcase_22	AC	1 ms 4,376 KB
testcase_23	AC	2 ms 4,380 KB
testcase_24	AC	2 ms 4,380 KB
testcase_25	AC	65 ms 4,376 KB
testcase_26	AC	125 ms 4,376 KB
testcase_27	AC	40 ms 4,380 KB
testcase_28	AC	2 ms 4,376 KB
testcase_29	AC	2 ms 4,380 KB
testcase_30	AC	2 ms 4,376 KB
testcase_31	AC	2 ms 4,376 KB
testcase_32	AC	2 ms 4,376 KB
testcase_33	AC	2 ms 4,380 KB
testcase_34	AC	11 ms 4,376 KB
testcase_35	AC	79 ms 4,380 KB
testcase_36	AC	2 ms 4,380 KB
testcase_37	AC	2 ms 4,380 KB
testcase_38	AC	181 ms 4,376 KB
testcase_39	AC	220 ms 4,376 KB
testcase_40	AC	116 ms 4,380 KB
testcase_41	AC	2 ms 4,376 KB
testcase_42	AC	8 ms 4,376 KB
testcase_43	AC	73 ms 4,376 KB
testcase_44	AC	249 ms 4,380 KB
testcase_45	AC	2 ms 4,380 KB
testcase_46	AC	1 ms 4,376 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

raw source code

#include <cassert>// c
#include <iostream>// io
#include <iomanip>
#include <fstream>
#include <sstream>
#include <vector>// container
#include <map>
#include <unordered_map>
#include <set>
#include <queue>
#include <bitset>
#include <stack>
#include <algorithm>// other
#include <complex>
#include <numeric>
#include <functional>
#include <random>
#include <regex>
using namespace std;

typedef long long ll;typedef unsigned long long ull;typedef long double ld;

#define ALL(c) c.begin(),c.end()
#define IN(l,v,r) (l<=v && v < r)
template<class T> void UNIQUE(T& v){v.erase(unique(ALL(v)),v.end());}
//debug==
#define DUMP(x) cerr << #x <<" = " << (x)
#define LINE() cerr<< " (L" << __LINE__ << ")"

struct range{
	struct Iter{
		int v,step;
		Iter& operator++(){v+=step;return *this;}
		bool operator!=(Iter& itr){return v<itr.v;}
		int& operator*(){return v;}
	};
	Iter i, n;
	range(int i, int n,int step):i({i,step}), n({n,step}){}
	range(int i, int n):range(i,n,1){}
	range(int n):range(0,n){}
	Iter& begin(){return i;}
	Iter& end(){return n;}
};
struct rrange{
	struct Iter{
		int v,step;
		Iter& operator++(){v-=step;return *this;}
		bool operator!=(Iter& itr){return v>itr.v;}
		int& operator*(){return v;}
	};
	Iter i, n;
	rrange(int i, int n,int step):i({i-1,step}), n({n-1,step}){}
	rrange(int i, int n):rrange(i,n,1){}
	rrange(int n) :rrange(0,n){}
	Iter& begin(){return n;}
	Iter& end(){return i;}
};

//input
template<typename T1,typename T2> istream& operator >> (istream& is,pair<T1,T2>& p){return is>>p.first>>p.second;}
template<typename T1> istream& operator >> (istream& is,tuple<T1>& t){return is >> get<0>(t);}
template<typename T1,typename T2> istream& operator >> (istream& is,tuple<T1,T2>& t){return is >> get<0>(t) >> get<1>(t);}
template<typename T1,typename T2,typename T3> istream& operator >> (istream& is,tuple<T1,T2,T3>& t){return is >>get<0>(t)>>get<1>(t)>>get<2>(t);}
template<typename T1,typename T2,typename T3,typename T4> istream& operator >> (istream& is,tuple<T1,T2,T3,T4>& t){return is >> get<0>(t)>>get<1>(t)>>get<2>(t)>>get<3>(t);}
template<typename T> istream& operator >> (istream& is,vector<T>& as){for(int i:range(as.size()))is >>as[i];return is;}
//output
template<typename T> ostream& operator << (ostream& os, const set<T>& ss){for(auto a:ss){if(a!=ss.begin())os<<" "; os<<a;}return os;}
template<typename T1,typename T2> ostream& operator << (ostream& os, const pair<T1,T2>& p){return os<<p.first<<" "<<p.second;}
template<typename K,typename V> ostream& operator << (ostream& os, const map<K,V>& m){bool isF=true;for(auto& p:m){if(!isF)os<<endl;os<<p;isF=false;}return os;}
template<typename T1> ostream& operator << (ostream& os, const tuple<T1>& t){return os << get<0>(t);}
template<typename T1,typename T2> ostream& operator << (ostream& os, const tuple<T1,T2>& t){return os << get<0>(t)<<" "<<get<1>(t);}
template<typename T1,typename T2,typename T3> ostream& operator << (ostream& os, const tuple<T1,T2,T3>& t){return os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t);}
template<typename T1,typename T2,typename T3,typename T4> ostream& operator << (ostream& os, const tuple<T1,T2,T3,T4>& t){return os << get<0>(t)<<" "<<get<1>(t)<<" "<<get<2>(t)<<" "<<get<3>(t);}
template<typename T> ostream& operator << (ostream& os, const vector<T>& as){for(int i:range(as.size())){if(i!=0)os<<" "; os<<as[i];}return os;}
template<typename T> ostream& operator << (ostream& os, const vector<vector<T>>& as){for(int i:range(as.size())){if(i!=0)os<<endl; os<<as[i];}return os;}

// values
template<typename T> inline T INF(){assert(false);};
template<> inline int INF<int>(){return 1<<28;};
template<> inline ll INF<ll>(){return 1LL<<60;};
template<> inline double INF<double>(){return 1e16;};
template<> inline long double INF<long double>(){return 1e16;};

template<class T> inline T EPS(){assert(false);};
template<> inline int EPS<int>(){return 1;};
template<> inline ll EPS<ll>(){return 1LL;};
template<> inline double EPS<double>(){return 1e-12;};
template<> inline long double EPS<long double>(){return 1e-12;};

// min{2^r | n < 2^r}
template<typename T> inline T upper_pow2(T n){ T res=1;while(res<n)res<<=1;return res;}
// max{d | 2^d  <= n}
template<typename T> inline T msb(T n){ int d=62;while((1LL<<d)>n)d--;return d;}


class Main{
	public:
	vector<int> ps;
	vector<int> pc;

	int dfs(int N,int X,int PX,int V,int pi,int rest){
		if(N == 0) return X == 1;
		if(pow((ll)V,(N-1)) > X) return 0;
		if(V * rest < PX) return 0;
		if(pi == pc.size()){
			if(PX <= V) return dfs(N-1,X,V,1,0,X);
			return 0;
		}
		int res = 0;
		if(pc[pi] > 0){
			pc[pi]--;
			res += dfs(N,X/ps[pi],PX,V*ps[pi],pi,rest/ps[pi]);
			pc[pi]++;
		}
		res += dfs(N,X,PX,V,pi+1,rest/pow(ps[pi],pc[pi]));
		return res;
	}

	void run(){
		int N;int X;
		cin >> N >> X;
		X++;
		{
			ll _X = X;
			for(int p = 2;p*p<=_X;p++){
				int c = 0;
				while(_X%p==0) c++,_X/=p;
				if(c > 0){
					ps.push_back(p); pc.push_back(c);
				}
			}
			if(_X!=1){
				ps.push_back(_X); pc.push_back(1);
			}
		}

		cout << dfs(N,X,2,1,0,X) << endl;
	}
};

int main(){
	cout <<fixed<<setprecision(20);
	cin.tie(0);
	ios::sync_with_stdio(false);
	Main().run();
	return 0;
}

yukicoder

結果

テストケース

ソースコード