結果

問題 No.1863 Xor Sum 2...?
ユーザー auaua
提出日時 2022-03-04 22:57:39
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 60 ms / 2,000 ms
コード長 4,838 bytes
コンパイル時間 1,603 ms
コンパイル使用メモリ 179,772 KB
実行使用メモリ 11,008 KB
最終ジャッジ日時 2024-07-18 21:33:07
合計ジャッジ時間 3,654 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge2
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 * 3
other AC * 28
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

#include<bits/stdc++.h>
using namespace std;
#include <unordered_set>
#include <random>
//#define int long long
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define endl '\n'
//#define vec vector<ll>
//#define mat vector<vector<ll> >
#define fi first
#define se second
#define double long double
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll> pll;
//typedef long double ld;
typedef complex<double> Complex;
const ll INF=1e9+7;
const ll MOD=998244353;
const ll inf=INF*INF;
const ll mod=MOD;
const ll MAX=20000010;
const double PI=acos(-1.0);
typedef vector<vector<ll> > mat;
typedef vector<ll> vec;
#include <algorithm>
#include <utility>
#include <vector>
namespace internal {
template <class E> struct csr {
    std::vector<int> start;
    std::vector<E> elist;
    csr(int n, const std::vector<std::pair<int, E>>& edges)
        : start(n + 1), elist(edges.size()) {
        for (auto e : edges) {
            start[e.first + 1]++;
        }
        for (int i = 1; i <= n; i++) {
            start[i] += start[i - 1];
        }
        auto counter = start;
        for (auto e : edges) {
            elist[counter[e.first]++] = e.second;
        }
    }
};
// Reference:
// R. Tarjan,
// Depth-First Search and Linear Graph Algorithms
struct scc_graph {
  public:
    scc_graph(int n) : _n(n) {}
    int num_vertices() { return _n; }
    void add_edge(int from, int to) { edges.push_back({from, {to}}); }
    // @return pair of (# of scc, scc id)
    std::pair<int, std::vector<int>> scc_ids() {
        auto g = csr<edge>(_n, edges);
        int now_ord = 0, group_num = 0;
        std::vector<int> visited, low(_n), ord(_n, -1), ids(_n);
        visited.reserve(_n);
        auto dfs = [&](auto self, int v) -> void {
            low[v] = ord[v] = now_ord++;
            visited.push_back(v);
            for (int i = g.start[v]; i < g.start[v + 1]; i++) {
                auto to = g.elist[i].to;
                if (ord[to] == -1) {
                    self(self, to);
                    low[v] = std::min(low[v], low[to]);
                } else {
                    low[v] = std::min(low[v], ord[to]);
                }
            }
            if (low[v] == ord[v]) {
                while (true) {
                    int u = visited.back();
                    visited.pop_back();
                    ord[u] = _n;
                    ids[u] = group_num;
                    if (u == v) break;
                }
                group_num++;
            }
        };
        for (int i = 0; i < _n; i++) {
            if (ord[i] == -1) dfs(dfs, i);
        }
        for (auto& x : ids) {
            x = group_num - 1 - x;
        }
        return {group_num, ids};
    }
    std::vector<std::vector<int>> scc() {
        auto ids = scc_ids();
        int group_num = ids.first;
        std::vector<int> counts(group_num);
        for (auto x : ids.second) counts[x]++;
        std::vector<std::vector<int>> groups(ids.first);
        for (int i = 0; i < group_num; i++) {
            groups[i].reserve(counts[i]);
        }
        for (int i = 0; i < _n; i++) {
            groups[ids.second[i]].push_back(i);
        }
        return groups;
    }
  private:
    int _n;
    struct edge {
        int to;
    };
    std::vector<std::pair<int, edge>> edges;
};
}  // namespace internal
#include <cassert>
#include <vector>
struct scc_graph {
  public:
    scc_graph() : internal(0) {}
    scc_graph(int n) : internal(n) {}
    void add_edge(int from, int to) {
        int n = internal.num_vertices();
        assert(0 <= from && from < n);
        assert(0 <= to && to < n);
        internal.add_edge(from, to);
    }
    std::vector<std::vector<int>> scc() { return internal.scc(); }
  private:
    internal::scc_graph internal;
};
  // namespace atcoder
void solve(){
    ll n;cin>>n;
    vector<ll>a(n),b(n);
    rep(i,n)cin>>a[i];
    rep(i,n)cin>>b[i];
    vector<ll>c(n);
    rep(i,n){
        c[i]=b[i];
        if(i)c[i]^=c[i-1];
    }
    vector<vector<ll> >d(n+1,vector<ll>(2));
    d[0][0]=1;
    rep(i,n){
        d[i+1][c[i]]++;
        d[i+1][0]+=d[i][0];
        d[i+1][1]+=d[i][1];
    }
    vector<ll>now(32);
    ll l=0;
    ll ans=0;
    rep(i,n){
        rep(j,32){
            if((1<<j)&a[i])now[j]++;
        }
        while(1){
            ll ma=0;
            rep(j,32)ma=max(ma,now[j]);
            if(ma<2)break;
            rep(j,32)if((1<<j)&a[l])now[j]--;
            l++;
        }
        ans+=d[i][c[i]];
        if(l)ans-=d[l-1][c[i]];
        //cout<<i<<' '<<c[i]<<' '<<l<<' '<<ans<<endl;
    }
    cout<<ans<<endl;
}
signed main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
}
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