test/aoj/0502/main.test.cpp

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• Last update: 2021-04-23 23:44:44+09:00
• Problem: http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0502

Depends on

• Input tuple (Mylib/IO/input_tuple.cpp)
• Input tuples (Mylib/IO/input_tuples.cpp)
• Dice (Mylib/Misc/dice.cpp)

Code

#define PROBLEM "http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0502"

#include <iostream>
#include <string>
#include "Mylib/IO/input_tuples.cpp"
#include "Mylib/Misc/dice.cpp"

namespace hl = haar_lib;

int main() {
  int N;
  while (std::cin >> N, N) {
    auto d = hl::dice(1, 6, 2, 5, 3, 4);

    int ans = 1;

    for (auto [s] : hl::input_tuples<std::string>(N)) {
      if (s == "North") d = d.rot_back(), ans += d.top;
      if (s == "East") d = d.rot_right(), ans += d.top;
      if (s == "West") d = d.rot_left(), ans += d.top;
      if (s == "South") d = d.rot_front(), ans += d.top;
      if (s == "Right") d = d.rot_clockwise(), ans += d.top;
      if (s == "Left") d = d.rot_counterclockwise(), ans += d.top;
    }

    std::cout << ans << "\n";
  }

  return 0;
}

#line 1 "test/aoj/0502/main.test.cpp"
#define PROBLEM "http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0502"

#include <iostream>
#include <string>
#line 2 "Mylib/IO/input_tuples.cpp"
#include <initializer_list>
#line 4 "Mylib/IO/input_tuples.cpp"
#include <tuple>
#include <utility>
#include <vector>
#line 6 "Mylib/IO/input_tuple.cpp"

namespace haar_lib {
  template <typename T, size_t... I>
  static void input_tuple_helper(std::istream &s, T &val, std::index_sequence<I...>) {
    (void) std::initializer_list<int>{(void(s >> std::get<I>(val)), 0)...};
  }

  template <typename T, typename U>
  std::istream &operator>>(std::istream &s, std::pair<T, U> &value) {
    s >> value.first >> value.second;
    return s;
  }

  template <typename... Args>
  std::istream &operator>>(std::istream &s, std::tuple<Args...> &value) {
    input_tuple_helper(s, value, std::make_index_sequence<sizeof...(Args)>());
    return s;
  }
}  // namespace haar_lib
#line 8 "Mylib/IO/input_tuples.cpp"

namespace haar_lib {
  template <typename... Args>
  class InputTuples {
    struct iter {
      using value_type = std::tuple<Args...>;
      value_type value;
      bool fetched = false;
      int N, c = 0;

      value_type operator*() {
        if (not fetched) {
          std::cin >> value;
        }
        return value;
      }

      void operator++() {
        ++c;
        fetched = false;
      }

      bool operator!=(iter &) const {
        return c < N;
      }

      iter(int N) : N(N) {}
    };

    int N;

  public:
    InputTuples(int N) : N(N) {}

    iter begin() const { return iter(N); }
    iter end() const { return iter(N); }
  };

  template <typename... Args>
  auto input_tuples(int N) {
    return InputTuples<Args...>(N);
  }
}  // namespace haar_lib
#line 3 "Mylib/Misc/dice.cpp"

namespace haar_lib {
  struct dice {
    int top, bottom, front, back, right, left;

    dice() : top(), bottom(), front(), back(), right(), left() {}
    dice(int top, int bottom, int front, int back, int right, int left) : top(top), bottom(bottom), front(front), back(back), right(right), left(left) {}

    dice rot_left() const {
      return dice(right, left, front, back, bottom, top);
    }

    dice rot_right() const {
      return dice(left, right, front, back, top, bottom);
    }

    dice rot_front() const {
      return dice(back, front, top, bottom, right, left);
    }

    dice rot_back() const {
      return dice(front, back, bottom, top, right, left);
    }

    dice rot_clockwise() const {
      return dice(top, bottom, right, left, back, front);
    }

    dice rot_counterclockwise() const {
      return dice(top, bottom, left, right, front, back);
    }

    friend std::ostream &operator<<(std::ostream &s, const dice &a) {
      s << "("
        << a.top << ", "
        << a.bottom << ", "
        << a.front << ", "
        << a.back << ", "
        << a.right << ", "
        << a.left << ")";
      return s;
    }
  };
}  // namespace haar_lib
#line 7 "test/aoj/0502/main.test.cpp"

namespace hl = haar_lib;

int main() {
  int N;
  while (std::cin >> N, N) {
    auto d = hl::dice(1, 6, 2, 5, 3, 4);

    int ans = 1;

    for (auto [s] : hl::input_tuples<std::string>(N)) {
      if (s == "North") d = d.rot_back(), ans += d.top;
      if (s == "East") d = d.rot_right(), ans += d.top;
      if (s == "West") d = d.rot_left(), ans += d.top;
      if (s == "South") d = d.rot_front(), ans += d.top;
      if (s == "Right") d = d.rot_clockwise(), ans += d.top;
      if (s == "Left") d = d.rot_counterclockwise(), ans += d.top;
    }

    std::cout << ans << "\n";
  }

  return 0;
}

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