結果
問題 | No.1020 Reverse |
ユーザー | r1933 |
提出日時 | 2020-04-11 01:07:13 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 5 ms / 2,000 ms |
コード長 | 4,638 bytes |
コンパイル時間 | 2,062 ms |
コンパイル使用メモリ | 202,368 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-16 05:27:16 |
合計ジャッジ時間 | 2,947 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 3 ms
6,940 KB |
testcase_10 | AC | 4 ms
6,944 KB |
testcase_11 | AC | 4 ms
6,940 KB |
testcase_12 | AC | 4 ms
6,940 KB |
testcase_13 | AC | 4 ms
6,944 KB |
testcase_14 | AC | 5 ms
6,940 KB |
testcase_15 | AC | 5 ms
6,940 KB |
testcase_16 | AC | 4 ms
6,940 KB |
testcase_17 | AC | 4 ms
6,944 KB |
ソースコード
#include "bits/stdc++.h" // Begin Healder {{{ using namespace std; #ifndef DEBUG #define dump(...) #endif #define all(x) x.begin(), x.end() #define rep(i, b, e) for (intmax_t i = (b), i##_limit = (e); i < i##_limit; ++i) #define reps(i, b, e) for (intmax_t i = (b), i##_limit = (e); i <= i##_limit; ++i) #define repr(i, b, e) for (intmax_t i = (b), i##_limit = (e); i >= i##_limit; --i) #define var(Type, ...) Type __VA_ARGS__; input(__VA_ARGS__) constexpr size_t operator""_zu(unsigned long long value) { return value; }; constexpr intmax_t operator""_jd(unsigned long long value) { return value; }; constexpr uintmax_t operator""_ju(unsigned long long value) { return value; }; constexpr int INF = 0x3f3f3f3f; constexpr intmax_t LINF = 0x3f3f3f3f3f3f3f3f_jd; template <class T, class Compare = less<>> using MaxHeap = priority_queue<T, vector<T>, Compare>; template <class T, class Compare = greater<>> using MinHeap = priority_queue<T, vector<T>, Compare>; inline void input() {} template <class Head, class... Tail> inline void input(Head&& head, Tail&&... tail) { cin >> head; input(forward<Tail>(tail)...); } template <class T> inline istream& operator>>(istream &is, vector<T> &vec) { for (auto &e: vec) { is >> e; } return is; } inline void output() { cout << "\n"; } template <class Head, class... Tail> inline void output(Head&& head, Tail&&... tail) { cout << head; if (sizeof...(tail)) { cout << " "; } output(forward<Tail>(tail)...); } template <class T> inline ostream& operator<<(ostream &os, const vector<T> &vec) { static constexpr const char *delim[] = {" ", ""}; for (const auto &e: vec) { os << e << delim[&e == &vec.back()]; } return os; } template <class T> inline vector<T> makeVector(const T &initValue, size_t sz) { return vector<T>(sz, initValue); } template <class T, class... Args> inline auto makeVector(const T &initValue, size_t sz, Args... args) { return vector<decltype(makeVector<T>(initValue, args...))>(sz, makeVector<T>(initValue, args...)); } template <class Func> class FixPoint : Func { public: explicit constexpr FixPoint(Func&& f) noexcept : Func(forward<Func>(f)) {} template <class... Args> constexpr decltype(auto) operator()(Args&&... args) const { return Func::operator()(*this, std::forward<Args>(args)...); } }; template <class Func> static inline constexpr decltype(auto) makeFixPoint(Func&& f) noexcept { return FixPoint<Func>{forward<Func>(f)}; } template <class Container> struct reverse_t { Container &c; reverse_t(Container &c) : c(c) {} auto begin() { return c.rbegin(); } auto end() { return c.rend(); } }; template <class Container> auto reversed(Container &c) { return reverse_t<Container>(c); } template <class T> inline bool chmax(T &a, const T &b) noexcept { return b > a && (a = b, true); } template <class T> inline bool chmin(T &a, const T &b) noexcept { return b < a && (a = b, true); } template <class T> inline T diff(const T &a, const T &b) noexcept { return a < b ? b - a : a - b; } // End Header }}} // Edge {{{ template <class Weight> struct Edge { size_t from, to; Weight weight; Edge() {} Edge(size_t from, size_t to, Weight weight = 1) : from(from), to(to), weight(weight) {} bool operator<(const Edge &rhs) const { return weight < rhs.weight; } bool operator>(const Edge &rhs) const { return weight > rhs.weight; } operator size_t() const { return to; } }; // }}} // Graph {{{ template <class Weight> class Graph : public vector<vector<Edge<Weight>>> { using graph = vector<vector<Edge<Weight>>>; public: Graph() {} Graph(const size_t V) : graph(V) {} void connect(size_t from, size_t to, Weight weight = 1) { (*this)[from].emplace_back(from, to, weight); } friend ostream& operator<<(ostream &strm, const Graph &G) { for (size_t v = 0; v < G.size(); ++v) { strm << '[' << setw(2) << v << ']'; for (const auto &e: G[v]) { strm << ' ' << setw(2) << e.to; } strm << '\n'; } return strm; } }; // }}} signed main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.setf(ios_base::fixed); cout.precision(10); var(size_t, N, K); var(string, S); rep(i, K - 1, N) cout << S[i]; const size_t n = N - K + 1; if (n & 1) { repr(i, K - 2, 0) cout << S[i]; } else { rep(i, 0, K - 1) cout << S[i]; } output(); return 0; }