結果
問題 | No.1244 Black Segment |
ユーザー | satanic |
提出日時 | 2020-10-02 22:35:32 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 112 ms / 2,000 ms |
コード長 | 11,001 bytes |
コンパイル時間 | 1,463 ms |
コンパイル使用メモリ | 137,468 KB |
実行使用メモリ | 18,352 KB |
最終ジャッジ日時 | 2024-07-17 22:12:12 |
合計ジャッジ時間 | 4,867 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 1 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 1 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 3 ms
6,940 KB |
testcase_14 | AC | 33 ms
9,472 KB |
testcase_15 | AC | 3 ms
6,944 KB |
testcase_16 | AC | 33 ms
9,472 KB |
testcase_17 | AC | 4 ms
6,940 KB |
testcase_18 | AC | 47 ms
12,676 KB |
testcase_19 | AC | 80 ms
14,584 KB |
testcase_20 | AC | 78 ms
15,740 KB |
testcase_21 | AC | 65 ms
15,708 KB |
testcase_22 | AC | 89 ms
15,600 KB |
testcase_23 | AC | 84 ms
15,872 KB |
testcase_24 | AC | 90 ms
16,324 KB |
testcase_25 | AC | 83 ms
16,384 KB |
testcase_26 | AC | 90 ms
15,692 KB |
testcase_27 | AC | 89 ms
15,708 KB |
testcase_28 | AC | 94 ms
16,712 KB |
testcase_29 | AC | 87 ms
16,016 KB |
testcase_30 | AC | 91 ms
16,788 KB |
testcase_31 | AC | 69 ms
15,976 KB |
testcase_32 | AC | 82 ms
15,808 KB |
testcase_33 | AC | 71 ms
16,052 KB |
testcase_34 | AC | 112 ms
18,352 KB |
testcase_35 | AC | 100 ms
18,004 KB |
testcase_36 | AC | 105 ms
17,652 KB |
testcase_37 | AC | 98 ms
17,604 KB |
testcase_38 | AC | 99 ms
17,784 KB |
ソースコード
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(@@@# // WH@N+. .W@@@@MHB= .TWH@M@Hmc .H@@M~ // .H@@@@N, _!~ .d@@@N, // .J@@#T@@@N, .d@@@@@@@b. // (@@@@! .T@@@n, .(H@@@H>.W@@@x // (@@@F 4@@@@MaJ. .d@@@@Y77 4@@@r //.H@@P ?TM@@@@N... .-JH@HMY= d@@N, //(@@@F ?"WM@@@MQa-,. .(J(JN@@M#" Z@@@L // d@@H, (M@@@@@@@Ng&maJ.... .. ...J.J+W@@@@@@HY! .dH@b // ?M@@@N&. ..(JW@@@MM"?7""TYHMH@@HH@@@@@HHHgkHagHa(mggdmmagH@H@@Q@@HMMMHY"7!TMM@@@HaJ,. ..H@@@M^ // ?"W@@@@MN@@@@@H@@MMY" _???!"= ?WMMBYYTMH=7""Y@""?"~^ _"YM@@@@@@@@MH@@@@@#"^ // ?77WMMMYB""! _7"WWMMMY"7= // need #include <iostream> #include <algorithm> // data structure #include <bitset> #include <map> #include <queue> #include <set> #include <stack> #include <string> #include <cstring> #include <utility> #include <vector> #include <complex> //#include <deque> #include <valarray> #include <unordered_map> #include <unordered_set> #include <array> // etc #include <cassert> #include <cmath> #include <functional> #include <iomanip> #include <chrono> #include <random> #include <numeric> #include <fstream> //std::ifstream ifs("b.in"); //auto& scan_in = ifs; auto& scan_in = std::cin; auto& scan_out = std::cout; // input #define INIT std::ios::sync_with_stdio(false);std::cin.tie(0); #define VAR(type, ...)type __VA_ARGS__;MACRO_VAR_Scan(__VA_ARGS__); template<typename T> void MACRO_VAR_Scan(T& t) { scan_in >> t; } template<typename First, typename...Rest>void MACRO_VAR_Scan(First& first, Rest& ...rest) { scan_in >> first; MACRO_VAR_Scan(rest...); } #define VEC_ROW(type, n, ...)std::vector<type> __VA_ARGS__;MACRO_VEC_ROW_Init(n, __VA_ARGS__); for(int w_=0; w_<n; ++w_){MACRO_VEC_ROW_Scan(w_, __VA_ARGS__);} template<typename T> void MACRO_VEC_ROW_Init(int n, T& t) { t.resize(n); } template<typename First, typename...Rest>void MACRO_VEC_ROW_Init(int n, First& first, Rest& ...rest) { first.resize(n); MACRO_VEC_ROW_Init(n, rest...); } template<typename T> void MACRO_VEC_ROW_Scan(int p, T& t) { scan_in >> t[p]; } template<typename First, typename...Rest>void MACRO_VEC_ROW_Scan(int p, First& first, Rest& ...rest) { scan_in >> first[p]; MACRO_VEC_ROW_Scan(p, rest...); } #define VEC(type, c, n) std::vector<type> c(n);for(auto& i:c)scan_in>>i; #define MAT(type, c, m, n) std::vector<std::vector<type>> c(m, std::vector<type>(n));for(auto& R:c)for(auto& w:R)scan_in>>w; // output template<typename T>void MACRO_OUT(const T t) { scan_out << t; } template<typename First, typename...Rest>void MACRO_OUT(const First first, const Rest...rest) { scan_out << first << ' '; MACRO_OUT(rest...); } #define OUT(...) MACRO_OUT(__VA_ARGS__); #define FOUT(n, dist) scan_out<<std::fixed<<std::setprecision(n)<<(dist); #define SOUT(n, c, dist) scan_out<<std::setw(n)<<std::setfill(c)<<(dist); #define VOUT(v) for(size_t i = 0; i < v.size(); ++i) {OUT(v[i]);if(i+1<v.size()){SP}} #define EOUT(...) do{ OUT(__VA_ARGS__)BR; exit(0); }while(0); #define SP scan_out<<' '; #define TAB scan_out<<'\t'; #define BR scan_out<<'\n'; #define SPBR(w, n) scan_out<<(w + 1 == n ? '\n' : ' '); #define ENDL scan_out<<std::endl; #define FLUSH scan_out<<std::flush; #define SHOW(dist) {std::cerr << #dist << "\t: " << (dist) << '\n';} // utility #define ALL(a) (a).begin(),(a).end() #define FOR(w, a, n) for(int w=(a);w<(n);++w) #define REP(w, n) FOR(w, 0, n) #define RFOR(w, a, n) for(int w=(n)-1;w>=(a);--w) #define RREP(w, n) RFOR(w, 0, n) template<class S, class T, class U> bool IN(S a, T x, U b) { return a <= x && x < b; } template<class T> inline T CHMAX(T& a, const T b) { return a = (a < b) ? b : a; } template<class T> inline T CHMIN(T& a, const T b) { return a = (a > b) ? b : a; } // test template<class T> using V = std::vector<T>; template<class T> using VV = V<V<T>>; template<typename S, typename T> std::ostream& operator<<(std::ostream& os, const std::pair<S, T>& p) { os << '(' << p.first << ',' << p.second << ')'; return os; } template<typename T> std::ostream& operator<<(std::ostream& os, const std::vector<T>& v) { os << '{'; for (size_t i = 0; i < v.size(); ++i) os << v[i] << ((i + 1 < v.size()) ? ',' : '}'); return os; } template<typename T> std::ostream & operator<<(std::ostream & os, const std::set<T> & v) { os << '{'; for (auto it = v.cbegin(); it != v.cend();) { os << *it << (++it == v.cend() ? '}' : ','); } return os; } template<typename S, typename T> std::ostream& operator<<(std::ostream & os, const std::map<S, T> & m) { os << '{'; for (auto it = m.cbegin(); it != m.cend();) { os << it->first << ':' << it->second; ++it; os << (it != m.cend() ? ',' : '}'); } return os; } template<typename T> std::ostream& operator<<(std::ostream & os, std::queue<T> q) { os << '<'; while (!q.empty()) { os << q.front(); q.pop(); os << (q.empty() ? '<' : ','); } return os; } template<typename T> std::ostream& operator<<(std::ostream & os, std::stack<T> q) { os << '>'; while (!q.empty()) { os << q.top(); q.pop(); os << (q.empty() ? ']' : ','); } return os; } namespace std { template<typename S, typename T> class numeric_limits<pair<S, T>> { public: static constexpr pair<S, T> max() noexcept { return { numeric_limits<S>::max(), numeric_limits<T>::max() }; } static constexpr pair<S, T> lowest() noexcept { return { numeric_limits<S>::lowest(), numeric_limits<T>::lowest() }; } }; } // type/const using i64 = std::int_fast64_t; using u64 = std::uint_fast64_t; using ll = long long; using ull = unsigned long long; using ld = long double; using PAIR = std::pair<i64, i64>; constexpr int INFINT = (1 << 30) - 1; // 1.07x10^ 9 constexpr int INFINT_LIM = (1LL << 31) - 1; // 2.15x10^ 9 constexpr long long INFLL = 1LL << 60; // 1.15x10^18 constexpr long long INFLL_LIM = (1LL << 62) - 1 + (1LL << 62); // 9.22x10^18 constexpr double EPS = 1e-6; constexpr i64 MOD = 998244353; constexpr double PI = 3.141592653589793238462643383279; template<class T, size_t N> void FILL(T(&a)[N], const T & val) { for (auto& x : a) x = val; } template<class ARY, size_t N, size_t M, class T> void FILL(ARY(&a)[N][M], const T & val) { for (auto& b : a) FILL(b, val); } template<class T> void FILL(std::vector<T> & a, const T & val) { for (auto& x : a) x = val; } template<class ARY, class T> void FILL(std::vector<std::vector<ARY>> & a, const T & val) { for (auto& b : a) FILL(b, val); } // ------------>8--------- signed main() { INIT; VAR(int, n, m, a, b); --a; --b; VEC_ROW(int, m, l, r); struct Edge { int to, cost; Edge() {} Edge(int to, int cost) : to(to), cost(cost) {} bool operator<(const Edge& r) const { return cost < r.cost; } }; std::vector<std::vector<Edge>> g(n * 2 + 2); const int S = n * 2, T = S + 1; REP(i, a + 1) g[S].emplace_back(i, 0); FOR(i, b, n) g[n + i].emplace_back(T, 0); REP(i, m) { --l[i]; --r[i]; g[l[i]].emplace_back(n + r[i], 1); g[n + r[i]].emplace_back(l[i], 1); if (r[i] + 1 < n) { g[n + r[i]].emplace_back(r[i] + 1, 0); g[r[i] + 1].emplace_back(n + r[i], 0); } } std::vector<int> dist(n * 2 + 2); std::function<void(int)> Dijkstra = [&](int s) { using P = std::pair<int, int>; std::priority_queue<P, std::vector<P>, std::greater<P>> pq; std::fill(dist.begin(), dist.end(), INFINT); dist[s] = 0; pq.push(P(0, s)); while (!pq.empty()) { P p = pq.top(); pq.pop(); int v = p.second; if (dist[v] < p.first) continue; for (int i = 0; i < g[v].size(); ++i) { Edge e = g[v][i]; if (dist[e.to] > dist[v] + e.cost) { dist[e.to] = dist[v] + e.cost; pq.push(P(dist[e.to], e.to)); } } } }; Dijkstra(S); i64 ans = dist[T]; if (ans >= INFINT) ans = -1; OUT(ans)BR; return 0; }