結果

問題 No.2612 Close the Distance
ユーザー risujiroh
提出日時 2024-01-19 22:24:21
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
TLE  
実行時間 -
コード長 5,997 bytes
コンパイル時間 3,443 ms
コンパイル使用メモリ 294,892 KB
実行使用メモリ 11,264 KB
最終ジャッジ日時 2024-09-28 04:44:15
合計ジャッジ時間 8,458 ms
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 * 3 TLE * 1 -- * 20
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

#if __INCLUDE_LEVEL__ == 0
#include __BASE_FILE__
namespace {
void solve() {
  int n;
  scan(n);
  std::vector<int> x(n), y(n);
  for (const int i : rep(n)) {
    scan(x[i], y[i]);
    std::tie(x[i], y[i]) = std::pair(x[i] + y[i], y[i] - x[i]);
  }
  const auto check = [&](int d) -> bool {
    for (const int mask : rep(1 << 6)) {
      std::basic_string<bool> alive(n, true);
      for (const int c : rep(3)) {
        int lx;
        if (mask >> (c * 2) & 1) {
          lx = ranges::min(rep(n) | views::filter(at(alive, _1)) | views::transform(at(x, _1)));
        } else {
          lx = ranges::max(rep(n) | views::filter(at(alive, _1)) | views::transform(at(x, _1))) - d;
        }
        int ly;
        if (mask >> (c * 2 + 1) & 1) {
          ly = ranges::min(rep(n) | views::filter(at(alive, _1)) | views::transform(at(y, _1)));
        } else {
          ly = ranges::max(rep(n) | views::filter(at(alive, _1)) | views::transform(at(y, _1))) - d;
        }
        for (const int i : rep(n)) {
          if (lx <= x[i] && x[i] <= lx + d && ly <= y[i] && y[i] <= ly + d) {
            alive[i] = false;
          }
        }
        if (ranges::find(alive, true) == alive.end()) {
          return true;
        }
      }
    }
    return false;
  };
  int ng = -1;
  int ok = 2e9;
  while (ng + 1 < ok) {
    const int mid = std::midpoint(ng, ok);
    (check(mid) ? ok : ng) = mid;
  }
  print(ok);
}
// 3 色
// 正方形
// 一番下の点
// ギリギリじゃないと損
// 全探索
}  // namespace
int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  solve();
}
#else  // __INCLUDE_LEVEL__
#include <bits/stdc++.h>
template <class T, class U = T>
bool chmin(T& x, U&& y) {
  return y < x && (x = std::forward<U>(y), true);
}
template <class T, class U = T>
bool chmax(T& x, U&& y) {
  return x < y && (x = std::forward<U>(y), true);
}
template <std::signed_integral T = int>
T inf() {
  T ret;
  std::memset(&ret, 0x3f, sizeof(ret));
  return ret;
}
template <std::floating_point T>
T inf() {
  return std::numeric_limits<T>::infinity();
}
template <class T>
concept Range = std::ranges::range<T> && !std::convertible_to<T, std::string_view>;
template <class T>
concept TupleLike = std::__is_tuple_like<T>::value && !Range<T>;
namespace std {
istream& operator>>(istream& is, Range auto&& r) {
  for (auto&& e : r) {
    is >> e;
  }
  return is;
}
istream& operator>>(istream& is, TupleLike auto&& t) {
  return apply([&](auto&... xs) -> istream& { return (is >> ... >> xs); }, t);
}
ostream& operator<<(ostream& os, Range auto&& r) {
  string_view sep = "";
  for (auto&& e : r) {
    os << exchange(sep, " ") << e;
  }
  return os;
}
ostream& operator<<(ostream& os, TupleLike auto&& t) {
  const auto f = [&](auto&... xs) -> ostream& {
    [[maybe_unused]] string_view sep = "";
    ((os << exchange(sep, " ") << xs), ...);
    return os;
  };
  return apply(f, t);
}
#define DEF_INC_OR_DEC(op) \
  auto& operator op(Range auto&& r) { \
    for (auto&& e : r) { \
      op e; \
    } \
    return r; \
  } \
  auto& operator op(TupleLike auto&& t) { \
    apply([](auto&... xs) { (op xs, ...); }, t); \
    return t; \
  }
DEF_INC_OR_DEC(++)
DEF_INC_OR_DEC(--)
#undef DEF_INC_OR_DEC
}  // namespace std
void scan(auto&&... xs) { std::cin >> std::tie(xs...); }
void print(auto&&... xs) { std::cout << std::tie(xs...) << '\n'; }
#define FWD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__)
template <class F>
class fix {
 public:
  explicit fix(F f) : f_(std::move(f)) {}
  decltype(auto) operator()(auto&&... xs) const { return f_(std::ref(*this), FWD(xs)...); }
 private:
  F f_;
};
template <class T>
concept LambdaExpr = std::is_placeholder_v<std::remove_cvref_t<T>> != 0 ||
                     std::is_bind_expression_v<std::remove_cvref_t<T>>;
auto operator++(LambdaExpr auto&& x, int) {
  return std::bind([](auto&& x) -> decltype(auto) { return FWD(x)++; }, FWD(x));
}
auto operator--(LambdaExpr auto&& x, int) {
  return std::bind([](auto&& x) -> decltype(auto) { return FWD(x)--; }, FWD(x));
}
#define DEF_UNARY_OP(op) \
  auto operator op(LambdaExpr auto&& x) { \
    return std::bind([](auto&& x) -> decltype(auto) { return op FWD(x); }, FWD(x)); \
  }
DEF_UNARY_OP(++)
DEF_UNARY_OP(--)
DEF_UNARY_OP(+)
DEF_UNARY_OP(-)
DEF_UNARY_OP(~)
DEF_UNARY_OP(!)
DEF_UNARY_OP(*)
DEF_UNARY_OP(&)
#undef DEF_UNARY_OP
#define DEF_BINARY_OP(op) \
  template <class T1, class T2> \
    requires LambdaExpr<T1> || LambdaExpr<T2> \
  auto operator op(T1&& x, T2&& y) { \
    return std::bind([](auto&& x, auto&& y) -> decltype(auto) { return FWD(x) op FWD(y); }, \
                     FWD(x), FWD(y)); \
  }
DEF_BINARY_OP(+=)
DEF_BINARY_OP(-=)
DEF_BINARY_OP(*=)
DEF_BINARY_OP(/=)
DEF_BINARY_OP(%=)
DEF_BINARY_OP(^=)
DEF_BINARY_OP(&=)
DEF_BINARY_OP(|=)
DEF_BINARY_OP(<<=)
DEF_BINARY_OP(>>=)
DEF_BINARY_OP(+)
DEF_BINARY_OP(-)
DEF_BINARY_OP(*)
DEF_BINARY_OP(/)
DEF_BINARY_OP(%)
DEF_BINARY_OP(^)
DEF_BINARY_OP(&)
DEF_BINARY_OP(|)
DEF_BINARY_OP(<<)
DEF_BINARY_OP(>>)
DEF_BINARY_OP(==)
DEF_BINARY_OP(!=)
DEF_BINARY_OP(<)
DEF_BINARY_OP(>)
DEF_BINARY_OP(<=)
DEF_BINARY_OP(>=)
DEF_BINARY_OP(&&)
DEF_BINARY_OP(||)
#undef DEF_BINARY_OP
template <class T1, class T2>
  requires LambdaExpr<T1> || LambdaExpr<T2>
auto at(T1&& x, T2&& y) {
  return std::bind([](auto&& x, auto&& y) -> decltype(auto) { return FWD(x)[FWD(y)]; }, FWD(x),
                   FWD(y));
}
template <int I>
auto get(LambdaExpr auto&& x) {
  return std::bind([](auto&& x) -> decltype(auto) { return std::get<I>(FWD(x)); }, FWD(x));
}
inline auto rep(int l, int r) { return std::views::iota(std::min(l, r), r); }
inline auto rep(int n) { return rep(0, n); }
inline auto rep1(int l, int r) { return rep(l, r + 1); }
inline auto rep1(int n) { return rep(1, n + 1); }
using namespace std::literals;
using namespace std::placeholders;
namespace ranges = std::ranges;
namespace views = std::views;
using i64 = std::int64_t;
#endif  // __INCLUDE_LEVEL__
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