結果

問題 No.2658 L-R Nim
ユーザー kaikeykaikey
提出日時 2024-03-03 02:10:29
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
WA  
実行時間 -
コード長 4,377 bytes
コンパイル時間 2,551 ms
コンパイル使用メモリ 221,036 KB
最終ジャッジ日時 2025-02-20 00:02:36
ジャッジサーバーID
(参考情報)
judge3 / judge5
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 4 WA * 1
other AC * 26 WA * 3 TLE * 1 -- * 18
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"
#include <random>
#include <chrono>
#define ALL(x) (x).begin(), (x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define SZ(x) ((lint)(x).size())
#define FOR(i, begin, end) for(lint i=(begin),i##_end_=(end);i<i##_end_;++i)
#define IFOR(i, begin, end) for(lint i=(end)-1,i##_begin_=(begin);i>=i##_begin_;--i)
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
#define endk '\n'
using namespace std; typedef unsigned long long _ulong; typedef long long int lint; typedef long double ld; typedef pair<lint, lint> plint; typedef
    pair<ld, ld> pld;
struct fast_ios { fast_ios() { cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(30); }; } fast_ios_;
template<class T> auto add = [](T a, T b) -> T { return a + b; };
template<class T> auto mul = [](T a, T b) -> T { return a * b; };
template<class T> auto f_max = [](T a, T b) -> T { return max(a, b); };
template<class T> auto f_min = [](T a, T b) -> T { return min(a, b); };
template<class T> using V = vector<T>;
using Vl = V<lint>; using VVl = V<Vl>; using VVVl = V<V<Vl>>;
template< typename T > ostream& operator<<(ostream& os, const vector< T >& v) {
for (int i = 0; i < (int)v.size(); i++) os << v[i] << (i + 1 != v.size() ? " " : "");
return os;
}
template< typename T >istream& operator>>(istream& is, vector< T >& v) {
for (T& in : v) is >> in;
return is;
}
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; }
template <class T>
T div_floor(T a, T b) {
if (b < 0) a *= -1, b *= -1;
return a >= 0 ? a / b : (a + 1) / b - 1;
}
template <class T>
T div_ceil(T a, T b) {
if (b < 0) a *= -1, b *= -1;
return a > 0 ? (a - 1) / b + 1 : a / b;
}
template <class F> struct rec {
F f;
rec(F&& f_) : f(std::forward<F>(f_)) {}
template <class... Args> auto operator()(Args &&... args) const {
return f(*this, std::forward<Args>(args)...);
}
};
lint gcd(lint a, lint b) { if (b == 0) return a; else return gcd(b, a % b); }
lint digit(lint a) { return (lint)log10(a); }
lint e_dist(plint a, plint b) { return abs(a.first - b.first) * abs(a.first - b.first) + abs(a.second - b.second) * abs(a.second - b.second); }
lint m_dist(plint a, plint b) { return abs(a.first - b.first) + abs(a.second - b.second); }
bool check_overflow(lint a, lint b, lint limit) { if (b == 0) return false; return a > limit / b; } // a * b > c => true
void Worshall_Floyd(VVl& g) { REP(k, SZ(g)) REP(i, SZ(g)) REP(j, SZ(g)) chmin(g[i][j], g[i][k] + g[k][j]); }
const lint MOD1000000007 = 1000000007, MOD998244353 = 998244353, INF = 2e18;
lint dx[8] = { 0, 1, 0, -1, 1, -1, -1, 1 }, dy[8] = { 1, 0, -1, 0, -1, -1, 1, 1 };
bool YN(bool flag) { cout << (flag ? "YES" : "NO") << endk; return flag; } bool yn(bool flag) { cout << (flag ? "Yes" : "No") << endk; return flag; }
struct Edge {
lint from, to;
lint cost;
Edge() {
}
Edge(lint u, lint v, lint c) {
cost = c;
from = u;
to = v;
}
bool operator<(const Edge& e) const {
return cost < e.cost;
}
};
typedef pair<plint, lint> tlint;
typedef pair<ld, ld> pld;
typedef pair<plint, plint> qlint;
typedef pair<Edge, lint> pEd;
typedef pair<plint, V<plint>> vVl;
typedef pair<string, string> pstr;
typedef pair<ld, lint> pint;
void solve() {
lint N, K;
cin >> N >> K;
Vl arr(N);
cin >> arr;
Vl sums(N + 1);
REP(i, N) sums[i + 1] = sums[i] ^ arr[i];
map<lint, Vl> vals;
REP(i, N + 1) vals[sums[i]].push_back(i);
V<plint> seg;
for (auto p : vals) {
if (SZ(p.second) > 2) {
yn(false);
return;
}
if (SZ(p.second) == 2) {
seg.push_back({ p.second[0], p.second[1] });
}
}
Vl _s(N + 1);
for (auto p : seg) {
_s[p.first] += 1;
_s[p.second] += -1;
}
REP(i, N) _s[i + 1] += _s[i];
Vl expect;
REP(i, N) if (SZ(seg) == _s[i]) expect.push_back(i);
set<lint> xs;
REP(i, N) {
FOR(k, -K, K + 1) {
lint m = max(0ll, arr[i] + k);
xs.insert(m ^ arr[i]);
}
}
for (auto v : xs) {
Vl ng(N + 1);
map<lint, lint> rf;
REP(i, N + 1) {
if (rf.count(_s[i] ^ v)) {
ng[rf[_s[i] ^ v]]++;
ng[i]--;
}
if (!rf.count(_s[i])) rf[_s[i]] = i;
}
REP(i, N) ng[i + 1] += ng[i];
REP(i, N) {
if (!ng[i] && _s[i] == SZ(seg)) {
yn(true);
return;
}
}
}
yn(false);
}
int main() {
lint T = 1;
//cin >> T;
while (T--) solve();
}
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