結果

問題 No.2823 PEX (Predecessing Excluded Value) Game
ユーザー ecottea
提出日時 2024-07-27 01:46:22
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
WA  
(最新)
AC  
(最初)
実行時間 -
コード長 8,979 bytes
コンパイル時間 4,497 ms
コンパイル使用メモリ 269,980 KB
最終ジャッジ日時 2025-02-23 19:01:30
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
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ファイルパターン 結果
sample AC * 3
other AC * 49 WA * 2
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

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; using ull = unsigned long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
int DX[4] = { 1, 0, -1, 0 }; // 4
int DY[4] = { 0, 1, 0, -1 };
int INF = 1001001001; ll INFL = 4004004003094073385LL; // (int)INFL = INF, (int)(-INFL) = -INF;
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d
#define repis(i, set) for(int i = lsb(set), bset##i = set; i < 32; bset##i -= 1 << i, i = lsb(bset##i)) // set
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) //
//
template <class T> inline ll powi(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
template <class T> inline T getb(T set, int i) { return (set >> i) & T(1); }
template <class T> inline T smod(T n, T m) { n %= m; if (n < 0) n += m; return n; } // mod
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
#endif //
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#ifdef _MSC_VER
#include "localACL.hpp"
#endif
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = static_modint<1234567891>;
//using mint = modint; // mint::set_mod(m);
namespace atcoder {
inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
}
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>; using pim = pair<int, mint>;
#endif
#ifdef _MSC_VER // Visual Studio
#include "local.hpp"
#else // gcc
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : 32; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : 64; }
template <size_t N> inline int lsb(const bitset<N>& b) { return b._Find_first(); }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_mat(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) { vc MLE(1<<30); EXIT(MLE.back()); } } // RE MLE
#endif
//O(?)
/*
* p
* nxt(p, nps) p nps
*/
using T = vi;
map<T, int> nim; //
template <class T>
map<T, int> calc_nimber(const T& p, function<void(const T&, vector<T>&)>& nxt) {
function<int(const T&)> calc_nimber = [&](const T& p) {
if (nim.count(p)) return nim[p];
vector<T> nps;
nxt(p, nps);
vi next_nimbers;
repe(np, nps) {
next_nimbers.push_back(calc_nimber(np));
}
uniq(next_nimbers);
int i = 0;
while (i < sz(next_nimbers) && next_nimbers[i] == i) i++;
nim[p] = i;
return nim[p];
};
calc_nimber(p);
return nim;
/* nxt
using T = vi;
function<void(const T&, vector<T>&)> nxt = [&](const T& p, vector<T>& nps) {
};
*/
}
//1 O(n)
/*
* s[0..n) '0' '1'
*/
vi length1(const vi& s, int one = 0) {
// verify : https://atcoder.jp/contests/agc046/tasks/agc046_c
vi len;
int l = 0;
repe(c, s) {
if (c == one) {
l++;
}
else {
len.push_back(l);
l = 0;
}
}
len.push_back(l);
return len;
}
void zikken() {
int n = 5;
function<void(const T&, vector<T>&)> nxt = [&](const T& p, vector<T>& nps) {
rep(i, n) {
if (p[i] == 0) continue;
repir(j, i - 1, 0) {
if (p[j] == 1) continue;
auto np(p);
swap(np[i], np[j]);
nps.push_back(np);
break;
}
}
};
vector<pair<vi, int>> data;
repb(set, n - 1) {
vi ini(n - 1);
rep(i, n - 1) ini[i] = getb(set, i);
ini.push_back(1);
vi lens = length1(ini);
vi lens2;
repe(l, lens) if (l > 0) lens2.push_back(l);
calc_nimber(ini, nxt);
// dump(lens2, ":", nim[ini] > 0);
data.push_back({ lens2, nim[ini] });
}
// sort(all(data)); dumpel(data);
dumpel(nim);
exit(0);
}
/*
0: (0 0 0 0 1 ,0)
1: (0 0 0 1 0 ,1)
2: (0 0 0 1 1 ,2)
3: (0 0 1 0 0 ,0)
4: (0 0 1 0 1 ,1)
5: (0 0 1 1 0 ,0)
6: (0 0 1 1 1 ,0)
7: (0 1 0 0 0 ,1)
8: (0 1 0 0 1 ,0)
9: (0 1 0 1 0 ,1)
10: (0 1 0 1 1 ,1)
11: (0 1 1 0 0 ,2)
12: (0 1 1 0 1 ,2)
13: (0 1 1 1 0 ,3)
14: (0 1 1 1 1 ,4)
15: (1 0 0 0 0 ,0)
16: (1 0 0 0 1 ,1)
17: (1 0 0 1 0 ,0)
18: (1 0 0 1 1 ,0)
19: (1 0 1 0 0 ,1)
20: (1 0 1 0 1 ,1)
21: (1 0 1 1 0 ,2)
22: (1 0 1 1 1 ,3)
23: (1 1 0 0 0 ,0)
24: (1 1 0 0 1 ,0)
25: (1 1 0 1 0 ,1)
26: (1 1 0 1 1 ,2)
27: (1 1 1 0 0 ,0)
28: (1 1 1 0 1 ,1)
29: (1 1 1 1 0 ,0)
30: (1 1 1 1 1 ,0)
*/
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
// zikken();
// https://zenn.dev/koboshi/articles/306304c0381c1e
//
//
// Georgia and Bob
//
//
//
// https://drken1215.hatenablog.com/entry/2019/03/15/114200
//
//
// staircase nim
// staircase nim yukicoder contest 427F
int n;
cin >> n;
vl l(n), r(n);
rep(i, n) cin >> l[i] >> r[i];
++r;
ll g = 0; ll c0 = l[0];
rep(i, n) {
if (~c0 & 1) {
g ^= r[i] - l[i];
}
if (i < n - 1) {
c0 += l[i + 1] - r[i];
}
}
cout << (g ? "First" : "Second") << endl;
}
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