結果

問題 No.1209 XOR Into You
ユーザー 👑 tute7627
提出日時 2020-08-30 13:41:06
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 320 ms / 2,000 ms
コード長 3,796 bytes
コンパイル時間 3,103 ms
コンパイル使用メモリ 213,608 KB
最終ジャッジ日時 2025-01-13 21:19:18
ジャッジサーバーID
(参考情報)
judge4 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 37
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 #
プレゼンテーションモードにする

//#define _GLIBCXX_DEBUG
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define lfs cout<<fixed<<setprecision(10)
#define ALL(a) (a).begin(),(a).end()
#define ALLR(a) (a).rbegin(),(a).rend()
#define spa << " " <<
#define fi first
#define se second
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define EB emplace_back
#define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++)
#define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--)
using ll = long long;
using ld = long double;
const ll MOD1 = 1e9+7;
const ll MOD9 = 998244353;
const ll INF = 1e18;
using P = pair<ll, ll>;
template<typename T1, typename T2>bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;}
template<typename T1, typename T2>bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;}
ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
template<typename T1,typename T2>void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}
template<typename T>void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++){cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}};
void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++){for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}};
template<typename T>void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;};
template<typename T>vector<vector<T>>vec(ll x, ll y, T w){vector<vector<T>>v(x,vector<T>(y,w));return v;}
ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;}
vector<ll>dx={1,-1,0,0,1,1,-1,-1};vector<ll>dy={0,0,1,-1,1,-1,1,-1};
template<typename T>vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
template<typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v(ts...))>(a,make_v(ts...));}
template<typename T1, typename T2>ostream &operator<<(ostream &os, const pair<T1, T2>&p){return os << p.first << " " << p.second;}
template<typename T>ostream &operator<<(ostream &os, const vector<T> &v){for(auto &z:v)os << z << " ";cout<<"|"; return os;}
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
template<typename T>
struct BIT{
ll n;
ll k=1;
vector<T>data;
BIT() = default;
BIT(ll size):n(size){
data.assign(n,0);
while(k*2<=n)k*=2;
}
void add(ll a,T w){
for(ll i=a+1;i<=n;i+=i&-i)data[i-1]+=w;
}
T sum(ll a){
if(a<0)return 0;
T ret = 0;
for(ll i=a+1;i>0;i-=i&-i)ret+=data[i-1];
return ret;
}
T sum(ll a,ll b){return a>b?0:sum(b)-sum(a-1);}
T operator[](ll pos){
return sum(pos,pos);
}
ll lower_bound(ll x){
ll ret=0;
for(ll i=k;i>0;i/=2){
if(ret+i<=n&&data[ret+i-1]<x){
x-=data[ret+i-1];
ret+=i;
}
}
return ret;
}
void print(){
for(ll i=0;i<n;i++){
if(i!=0)cout<<" ";
cout<<(*this)[i];
}
cout<<endl;
}
};
int main(){
cin.tie(nullptr);
ios_base::sync_with_stdio(false);
ll res=0,buf=0;
bool judge = true;
ll n;cin>>n;
vector<ll>a(n),b(n);
rep(i,0,n)cin>>a[i];
rep(i,0,n)cin>>b[i];
vector<ll>c(n-1),d(n-1);
rep(i,0,n-1)c[i]=a[i]^a[i+1];
rep(i,0,n-1)d[i]=b[i]^b[i+1];
{
auto e=c,f=d;
sort(ALL(e));
sort(ALL(f));
if(a[0]!=b[0]||e!=f){
cout<<-1<<endl;
return 0;
}
}
vector<ll>x(n-1);
{
map<ll,vector<ll>>mp;
rep(i,0,n-1)mp[d[i]].PB(i);
map<ll,ll>cnt;
rep(i,0,n-1){
x[i]=mp[c[i]][cnt[c[i]]];
cnt[c[i]]++;
}
}
BIT<ll>bit(n-1);
rep(i,0,n-1){
res+=bit.sum(x[i],n-2);
bit.add(x[i],1);
}
//debug(x,n-1);
cout<<res<<endl;
return 0;
}
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