結果
問題 | No.274 The Wall |
ユーザー | hamray |
提出日時 | 2021-03-13 02:10:32 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,923 bytes |
コンパイル時間 | 2,156 ms |
コンパイル使用メモリ | 213,768 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-10-14 15:14:06 |
合計ジャッジ時間 | 3,089 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
(要ログイン)
テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | WA | - |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | WA | - |
testcase_07 | AC | 2 ms
6,816 KB |
testcase_08 | AC | 2 ms
6,820 KB |
testcase_09 | AC | 1 ms
6,816 KB |
testcase_10 | AC | 3 ms
6,816 KB |
testcase_11 | AC | 2 ms
6,820 KB |
testcase_12 | AC | 16 ms
6,820 KB |
testcase_13 | AC | 2 ms
6,820 KB |
testcase_14 | AC | 6 ms
6,820 KB |
testcase_15 | AC | 9 ms
6,816 KB |
testcase_16 | AC | 2 ms
6,820 KB |
testcase_17 | AC | 2 ms
6,816 KB |
testcase_18 | AC | 2 ms
6,816 KB |
testcase_19 | AC | 16 ms
6,816 KB |
testcase_20 | AC | 18 ms
6,820 KB |
testcase_21 | AC | 19 ms
6,820 KB |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | AC | 21 ms
6,820 KB |
testcase_25 | AC | 19 ms
6,820 KB |
ソースコード
#include <bits/stdc++.h> //#include <atcoder/all> //using namespace atcoder; #pragma GCC target ("avx") #pragma GCC optimization ("O3") #pragma GCC optimization ("unroll-loops") using namespace std; typedef vector<int> VI; typedef vector<VI> VVI; typedef vector<string> VS; typedef pair<int, int> PII; typedef pair<int, int> pii; typedef pair<long long, long long> PLL; typedef pair<int, PII> TIII; typedef long long ll; typedef long double ld; typedef unsigned long long ull; #define FOR(i, s, n) for (int i = s; i < (int)n; ++i) #define REP(i, n) FOR(i, 0, n) #define rep(i, a, b) for (int i = a; i < (b); ++i) #define trav(a, x) for (auto &a : x) #define all(x) x.begin(), x.end() #define MOD 1000000007 template<class T1, class T2> inline bool chmax(T1 &a, T2 b) {if (a < b) {a = b; return true;} return false;} template<class T1, class T2> inline bool chmin(T1 &a, T2 b) {if (a > b) {a = b; return true;} return false;} const double EPS = 1e-6, PI = acos(-1); const double pi = 3.141592653589793238462643383279; //ここから編集 typedef string::const_iterator State; ll GCD(ll a, ll b){ return (b==0)?a:GCD(b, a%b); } ll LCM(ll a, ll b){ return a/GCD(a, b) * b; } template< int mod > struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int) (1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt< mod >(t); return (is); } static int get_mod() { return mod; } }; using modint = ModInt< 1000000007 >; template< typename T > struct Combination { vector< T > _fact, _rfact, _inv; Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) { _fact[0] = _rfact[sz] = _inv[0] = 1; for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i; _rfact[sz] /= _fact[sz]; for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1); for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1]; } inline T fact(int k) const { return _fact[k]; } inline T rfact(int k) const { return _rfact[k]; } inline T inv(int k) const { return _inv[k]; } T P(int n, int r) const { if(r < 0 || n < r) return 0; return fact(n) * rfact(n - r); } T C(int p, int q) const { if(q < 0 || p < q) return 0; return fact(p) * rfact(q) * rfact(p - q); } T H(int n, int r) const { if(n < 0 || r < 0) return (0); return r == 0 ? 1 : C(n + r - 1, r); } }; int modpow(ll x, ll n, int mod) { ll res = 1; while(n) { if(n&1) res = res*x % mod; x = x*x%mod; n >>= 1; } return res; } template< typename G > struct StronglyConnectedComponents { const G &g; vector<vector<int>> gg, rg; vector< int > comp, order, used; StronglyConnectedComponents(G &g) : g(g), gg(g.size()), rg(g.size()), comp(g.size(), -1), used(g.size()) { for(int i = 0; i < g.size(); i++) { for(auto e : g[i]) { gg[i].emplace_back((int) e); rg[(int) e].emplace_back(i); } } } int operator[](int k) { return comp[k]; } void dfs(int idx) { if(used[idx]) return; used[idx] = true; for(int to : gg[idx]) dfs(to); order.push_back(idx); } void rdfs(int idx, int cnt) { if(comp[idx] != -1) return; comp[idx] = cnt; for(int to : rg[idx]) rdfs(to, cnt); } void build(vector<int> &t) { for(int i = 0; i < gg.size(); i++) dfs(i); reverse(begin(order), end(order)); int ptr = 0; for(int i : order) if(comp[i] == -1) rdfs(i, ptr), ptr++; t.resize(comp.size()); REP(i,comp.size()) t[i] = comp[i]; } }; bool intersect(int l1, int r1, int l2, int r2) { return (l1 <= l2 && l2 <= r1) || (l1 <= r2 && r2 <= r1) || (l2 <= l1 && l1 <= r2) || (l2 <= r1 && r1 <= r2); } int main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(7); int N, M; cin >> N >> M; vector<int> L(N), R(N); REP(i,N) cin >> L[i] >> R[i]; vector<vector<int>> g(2*M); REP(i,N) { for(int j=i+1; j<N; j++) { bool f = intersect(L[i], R[i], L[j], R[j]); bool f2 = intersect(min(M-R[i]-1,M-L[i]-1), max(M-R[i]-1,M-L[i]-1), L[j], R[j]); if(f && f2) { cout << "NO" << endl; return 0; }else if(f) { g[i+N].push_back(j); g[j+N].push_back(i); }else if(f2) { g[i].push_back(j); g[j+N].push_back(i+N); } } } vector<int> cmp; StronglyConnectedComponents scc(g); scc.build(cmp); for(int i=0; i<N; i++) { if(cmp[i] == cmp[i+N]) { cout << "NO" << endl; } } cout << "YES" << endl; return 0; }