結果
| 問題 |
No.1142 XOR と XOR
|
| ユーザー |
|
| 提出日時 | 2020-07-31 23:57:30 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 108 ms / 2,000 ms |
| コード長 | 2,856 bytes |
| コンパイル時間 | 1,752 ms |
| コンパイル使用メモリ | 171,868 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-11-08 03:37:45 |
| 合計ジャッジ時間 | 4,296 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 25 |
ソースコード
#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;
template<int mod> struct ModInt{
long long x=0;
constexpr ModInt(long long x=0):x((x%mod+mod)%mod){}
constexpr ModInt operator+(const ModInt& r)const{return ModInt(*this)+=r;}
constexpr ModInt operator-(const ModInt& r)const{return ModInt(*this)-=r;}
constexpr ModInt operator*(const ModInt& r)const{return ModInt(*this)*=r;}
constexpr ModInt operator/(const ModInt& r)const{return ModInt(*this)/=r;}
constexpr ModInt& operator+=(const ModInt& r){ if((x+=r.x)>=mod) x-=mod; return *this;}
constexpr ModInt& operator-=(const ModInt& r){ if((x-=r.x)<0) x+=mod; return *this;}
constexpr ModInt& operator*=(const ModInt& r){ if((x*=r.x)>=mod) x%=mod; return *this;}
constexpr ModInt& operator/=(const ModInt& r){ return *this*=r.inv();}
ModInt inv() const {
long long s=x,sx=1,sy=0,t=mod,tx=0,ty=1;
while(s%t!=0){
long long temp=s/t,u=s-t*temp,ux=sx-temp*tx,uy=sy-temp*ty;
s=t;sx=tx;sy=ty;
t=u;tx=ux;ty=uy;
}
return ModInt(tx);
}
ModInt pow(long long n) const {
ModInt a=1;
while(n>0){
if(n&1) a*=*this;
*this*=*this;
n>>=1;
}
return a;
}
friend constexpr ostream& operator<<(ostream& os,const ModInt<mod>& a) {return os << a.x;}
friend constexpr istream& operator>>(istream& is,ModInt<mod>& a) {return is >> a.x;}
};
using mint = ModInt<MOD>;
int main(){
int n,m,k;
cin >> n >> m >> k;
vector<int> a(n),b(m);
vector<mint> cnta(1500),cntb(1500),alla(1500),allb(1500);
rep(i,n) cin >> a[i];
rep(i,m) cin >> b[i];
rep(i,n-1) a[i+1] ^= a[i];
rep(i,m-1) b[i+1] ^= b[i];
rep(i,n) cnta[a[i]] +=1;
rep(i,m) cntb[b[i]] +=1;
cnta[0]+=1;
cntb[0]+=1;
rep(i,1500)rep(j,i+1){
if(i==j){
alla[0] += (cnta[i] * (cnta[j]-1)) / 2;
allb[0] += (cntb[i] * (cntb[j]-1)) / 2;
}
else if((i^j)<1500){
alla[i^j] += cnta[i] * cnta[j];
allb[i^j] += cntb[i] * cntb[j];
}
}
/*
rep(i,n) cout << a[i] << " " ;cout << endl;
rep(i,m) cout << b[i] << " " ;cout << endl;
rep(i,30) cout << cnta[i] << " " ;cout << endl;
rep(i,30) cout << cntb[i] << " " ;cout << endl;
rep(i,30) cout << alla[i] << " " ;cout << endl;
rep(i,30) cout << allb[i] << " " ;cout << endl;
*/
mint ans = 0;
rep(i,1500)rep(j,1500){
if((i^j)==k) ans += alla[i] * allb[j];
}
cout << ans << endl;
return 0;
}