#563650 (C++14) No.1142 XOR と XOR

• 問題: No.1142 XOR と XOR
• ユーザー: kotatsugame
• 提出日時: 2020-10-09 05:13:07
• 言語: C++14 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 103 ms / 2,000 ms
• コード長: 2,485 bytes
• コンパイル時間: 643 ms
• コンパイル使用メモリ: 66,488 KB
• 実行使用メモリ: 5,248 KB
• 最終ジャッジ日時: 2024-11-08 03:49:32
• 合計ジャッジ時間: 3,089 ms
• ジャッジサーバーID （参考情報）: judge4 / judge5

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	4 ms; 5,248 KB
testcase_01	AC	4 ms; 5,248 KB
testcase_02	AC	5 ms; 5,248 KB
testcase_03	AC	103 ms; 5,248 KB
testcase_04	AC	69 ms; 5,248 KB
testcase_05	AC	58 ms; 5,248 KB
testcase_06	AC	71 ms; 5,248 KB
testcase_07	AC	62 ms; 5,248 KB
testcase_08	AC	87 ms; 5,248 KB
testcase_09	AC	87 ms; 5,248 KB
testcase_10	AC	86 ms; 5,248 KB
testcase_11	AC	4 ms; 5,248 KB
testcase_12	AC	5 ms; 5,248 KB
testcase_13	AC	4 ms; 5,248 KB
testcase_14	AC	48 ms; 5,248 KB
testcase_15	AC	47 ms; 5,248 KB
testcase_16	AC	8 ms; 5,248 KB
testcase_17	AC	49 ms; 5,248 KB
testcase_18	AC	15 ms; 5,248 KB
testcase_19	AC	71 ms; 5,248 KB
testcase_20	AC	47 ms; 5,248 KB
testcase_21	AC	31 ms; 5,248 KB
testcase_22	AC	19 ms; 5,248 KB
testcase_23	AC	67 ms; 5,248 KB
testcase_24	AC	75 ms; 5,248 KB
testcase_25	AC	45 ms; 5,248 KB
testcase_26	AC	71 ms; 5,248 KB
testcase_27	AC	57 ms; 5,248 KB

コンパイルメッセージ

a.cpp:25:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]

ソースコード

#line 1 "a.cpp"
#include<iostream>
using namespace std;
#line 3 "/home/kotatsugame/library/math/modint.cpp"
#include<utility>
template<int m>
struct modint{
	unsigned int x;
	constexpr modint()noexcept:x(){}
	constexpr modint(long long _x)noexcept:x((_x%=m)<0?_x+m:_x){}
	constexpr unsigned int val()const noexcept{return x;}
	constexpr modint&operator++()noexcept{if(++x==m)x=0;return*this;}
	constexpr modint&operator--()noexcept{if(x==0)x=m;--x;return*this;}
	constexpr modint operator++(int)noexcept{modint res=*this;++*this;return res;}
	constexpr modint operator--(int)noexcept{modint res=*this;--*this;return res;}
	constexpr modint&operator+=(const modint&a)noexcept{x+=a.x;if(x>=m)x-=m;return*this;}
	constexpr modint&operator-=(const modint&a)noexcept{if(x<a.x)x+=m;x-=a.x;return*this;}
	constexpr modint&operator*=(const modint&a)noexcept{x=(unsigned long long)x*a.x%m;return*this;}
	constexpr modint&operator/=(const modint&a)noexcept{return*this*=a.inv();}
	constexpr modint operator+()const noexcept{return*this;}
	constexpr modint operator-()const noexcept{return modint()-*this;}
	constexpr modint pow(long long n)const noexcept
	{
		if(n<0)return pow(-n).inv();
		modint x=*this,r=1;
		for(;n;x*=x,n>>=1)if(n&1)r*=x;
		return r;
	}
	constexpr modint inv()const noexcept
	{
		int s=x,t=m,x=1,u=0;
		while(t)
		{
			int k=s/t;
			s-=k*t;
			swap(s,t);
			x-=k*u;
			swap(x,u);
		}
		return modint(x);
	}
	friend constexpr modint operator+(modint a,const modint&b){return a+=b;}
	friend constexpr modint operator-(modint a,const modint&b){return a-=b;}
	friend constexpr modint operator*(modint a,const modint&b){return a*=b;}
	friend constexpr modint operator/(modint a,const modint&b){return a/=b;}
	friend constexpr modint operator==(const modint&a,const modint&b){return a.x==b.x;}
	friend constexpr modint operator!=(const modint&a,const modint&b){return a.x!=b.x;}
	friend ostream&operator<<(ostream&os,const modint&a){return os<<a.x;}
	friend istream&operator>>(istream&is,modint&a){long long v;is>>v;a=modint(v);return is;}
};
#line 4 "a.cpp"
using mint=modint<(int)1e9+7>;
int N,M,K;
mint X[1024],Y[1024];
void f(int N,mint*X)
{
	mint cnt[1024]={1};
	int now=0;
	for(int i=0;i<N;i++)
	{
		int a;cin>>a;
		cnt[now^=a]++;
	}
	for(int i=0;i<1024;i++)
	{
		X[0]+=cnt[i]*(cnt[i]-1)/2;
		for(int j=i+1;j<1024;j++)
		{
			X[i^j]+=cnt[i]*cnt[j];
		}
	}
}
main()
{
	cin>>N>>M>>K;
	f(N,X);
	f(M,Y);
	mint ans;
	for(int i=0;i<1024;i++)ans+=X[i]*Y[K^i];
	cout<<ans<<endl;
}