結果
問題 | No.274 The Wall |
ユーザー | mai |
提出日時 | 2017-07-08 00:30:12 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,665 bytes |
コンパイル時間 | 3,552 ms |
コンパイル使用メモリ | 225,780 KB |
実行使用メモリ | 132,480 KB |
最終ジャッジ日時 | 2024-10-06 10:12:56 |
合計ジャッジ時間 | 4,876 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 123 ms
68,992 KB |
testcase_04 | AC | 1 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,820 KB |
testcase_06 | AC | 1 ms
6,816 KB |
testcase_07 | AC | 1 ms
6,816 KB |
testcase_08 | AC | 1 ms
6,816 KB |
testcase_09 | AC | 1 ms
6,820 KB |
testcase_10 | AC | 2 ms
6,820 KB |
testcase_11 | AC | 348 ms
132,480 KB |
testcase_12 | AC | 10 ms
6,816 KB |
testcase_13 | AC | 2 ms
6,820 KB |
testcase_14 | AC | 4 ms
6,816 KB |
testcase_15 | AC | 8 ms
6,820 KB |
testcase_16 | AC | 89 ms
39,680 KB |
testcase_17 | AC | 85 ms
38,784 KB |
testcase_18 | AC | 94 ms
41,984 KB |
testcase_19 | AC | 13 ms
6,816 KB |
testcase_20 | AC | 15 ms
6,816 KB |
testcase_21 | AC | 16 ms
6,820 KB |
testcase_22 | WA | - |
testcase_23 | AC | 17 ms
6,820 KB |
testcase_24 | AC | 18 ms
6,816 KB |
testcase_25 | AC | 17 ms
6,816 KB |
コンパイルメッセージ
main.cpp: In member function '{anonymous}::MaiScanner& {anonymous}::MaiScanner::operator>>(std::string&)': main.cpp:72:9: warning: no return statement in function returning non-void [-Wreturn-type] 72 | } | ^
ソースコード
#pragma GCC optimize ("O3") #pragma GCC target ("avx") #include "bits/stdc++.h" // define macro "/D__MAI" using namespace std; typedef long long int ll; #define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl; #define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;} #define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl; #define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;} #define debugaar(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;} #define ALL(v) (v).begin(),(v).end() #define repeat(l) for(auto cnt=0;cnt<(l);++cnt) #define iterate(b,e) for(auto cnt=(b);cnt!=(e);++cnt) #define MD 1000000007ll #define PI 3.1415926535897932384626433832795 template<typename T1, typename T2> ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; } #define TIME chrono::system_clock::now() #define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count()) namespace { std::chrono::system_clock::time_point ttt; void tic() { ttt = TIME; } void toc() { fprintf(stderr, "TIME : %lldms\n", MILLISEC(TIME - ttt)); } std::chrono::system_clock::time_point tle = TIME; #ifdef __MAI void safe_tle(int msec) { assert(MILLISEC(TIME - tle) < msec); } #else #define safe_tle(k) ; #endif } #ifdef __MAI #define getchar_unlocked getchar #define putchar_unlocked putchar #endif #ifdef __VSCC #define getchar_unlocked _getchar_nolock #define putchar_unlocked _putchar_nolock #endif namespace { #define isvisiablechar(c) (0x21<=(c)&&(c)<=0x7E) class MaiScanner { public: template<typename T> void input_integer(T& var) { var = 0; T sign = 1; int cc = getchar_unlocked(); for (; cc<'0' || '9'<cc; cc = getchar_unlocked()) if (cc == '-') sign = -1; for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked()) var = (var << 3) + (var << 1) + cc - '0'; var = var*sign; } inline int c() { return getchar_unlocked(); } inline MaiScanner& operator>>(int& var) { input_integer<int>(var); return *this; } inline MaiScanner& operator>>(long long& var) { input_integer<long long>(var); return *this; } inline MaiScanner& operator>>(string& var) { int cc = getchar_unlocked(); for (; !isvisiablechar(cc); cc = getchar_unlocked()); for (; isvisiablechar(cc); cc = getchar_unlocked()) var.push_back(cc); } }; } MaiScanner scanner; class Graph { public: size_t n; vector<vector<int>> vertex_to; vector<vector<int>> vertex_from; Graph(size_t n) :n(n), vertex_to(n), vertex_from(n) {} void connect(int from, int to) { vertex_to[from].emplace_back(to); vertex_from[to].emplace_back(from); } void resize(size_t _n) { n = _n; vertex_to.resize(_n); vertex_from.resize(_n); } }; class sat_2 { public: size_t n; Graph graph; sat_2(size_t n) :n(n), graph(n * 2 + 1) { } private: inline int _cv(int v) { return 0<v ? v : -v + n; } void _scc_dfs1(int v, vector<int>& ord, vector<int> &num, int k) { if (0 <= num[v]) return; num[v] = k; for (int to : graph.vertex_to[v]) { _scc_dfs1(to, ord, num, k); } ord.push_back(v); } void _scc_dfs2(int v, vector<int> &num, int k) { if (num[v] < 0) return; num[v] = -k; for (int to : graph.vertex_from[v]) { _scc_dfs2(to, num, k); } } public: // 1 <= a <= n OR -1 >= a >= -n // 正ならばx_a,負ならばNOT x_aを表現. inline void emplace(int a, int b) { // assert(a!=0 && b!=0); graph.connect(_cv(-a), _cv(b)); graph.connect(_cv(-b), _cv(a)); } bool solve(vector<int>& result) { int i; vector<int> num(graph.n, -1), ord; ord.reserve(graph.n + 1); for (i = 0; i<graph.n; ++i) { _scc_dfs1(i, ord, num, i); } for (i = ord.size() - 1; 0 <= i; --i) { _scc_dfs2(ord[i], num, i + 1); } result.resize(n + 1); for (i = 1; i <= n; ++i) { if (num[i] == num[i + n]) return false; result[i] = (num[i] < num[i + n]); } return true; } }; int m, n, kei; int lr[2020][2]; int main() { scanner >> n >> m; --m; repeat(n) { scanner >> lr[cnt][0] >> lr[cnt][1]; } sat_2 sat(n); for (int i = 0; i < n - 1; ++i) { int vl = m - lr[i][1]; int vr = m - lr[i][0]; for (int j = i + 1; j < n; ++j) { if ((lr[i][0] <= lr[j][0] && lr[i][1] >= lr[j][0]) || (lr[i][0] <= lr[j][1] && lr[i][1] >= lr[j][1])) { sat.emplace((i + 1), (j + 1)); sat.emplace(-(i + 1), -(j + 1)); } if ((vl <= lr[j][0] && vr >= lr[j][0]) || (vl <= lr[j][1] && vr >= lr[j][1])) { sat.emplace((i + 1), -(j + 1)); sat.emplace(-(i + 1), (j + 1)); } } } vector<int> result; if (sat.solve(result)) { cout << "YES" << endl; } else { cout << "NO" << endl; } return 0; }