#261552 (C++14) No.5002 stick xor

• 問題: No.5002 stick xor
• ユーザー: mai
• 提出日時: 2018-05-30 15:03:41
• 言語: C++14 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 11 ms / 1,000 ms
• コード長: 12,076 bytes
• コンパイル時間: 5,005 ms
• 実行使用メモリ: 1,544 KB
• スコア: -42,601
• 最終ジャッジ日時: 2018-05-30 15:03:48
• ジャッジサーバーID （参考情報）: judge6 /

ファイルパターン	結果
other	AC * 32

ソースコード

#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h"

using namespace std;
using ll = long long int;

#define debug(v) {printf("L%d %s > ",__LINE__,#v);cout<<(v)<<endl;}
#define debugv(v) {printf("L%d %s > ",__LINE__,#v);for(auto e:(v)){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) {printf("L%d %s > ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;}
#define debugaa(m,h,w) {printf("L%d %s >\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(cnt,l) for(remove_const<decltype(l)>::type cnt=0;(cnt)<(l);++(cnt))
#define rrepeat(cnt,l) for(auto cnt=(l)-1;0<=(cnt);--(cnt))
#define iterate(cnt,b,e) for(auto cnt=(b);(cnt)!=(e);++(cnt))
#define diterate(cnt,b,e) for(auto cnt=(b);(cnt)!=(e);--(cnt))
const ll MD = 1000000007ll; const long double PI = 3.1415926535897932384626433832795L;
inline void assert_call(bool assertion, function<void()> f) { if (!assertion) { cerr << "assertion fault:" << endl; f(); abort(); } }
template<typename T1, typename T2> inline ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << '(' << p.first << ':' << p.second << ')'; return o; }
template<typename Vec> inline ostream& _ostream_vecprint(ostream &o, const Vec& p) { o << '['; for (auto& e : p) o << e << ','; o << ']'; return o; }
template<typename T> inline ostream& operator<<(ostream& o, const vector<T>& v) { return _ostream_vecprint(o, v); }
template<typename T, size_t S> inline ostream& operator<<(ostream& o, const array<T, S>& v) { return _ostream_vecprint(o, v); }
template<typename T> inline T& maxset(T& to, const T& val) { return to = max(to, val); }
template<typename T> inline T& minset(T& to, const T& val) { return to = min(to, val); }
void bye(string s, int code = 0) { cout << s << endl; exit(code); }

struct XorShift {
    using result_type = uint64_t;
    result_type x_;
    XorShift(result_type x = 88172645463325252ull) :x_(x) {};
    static constexpr inline result_type min() { return 0ull; }
    static constexpr inline result_type max() { return numeric_limits<result_type>::max(); }
    inline result_type operator()() { x_ ^= x_ << 7; return x_ ^= x_ >> 9; }
    inline void discard(unsigned long long z) { while (z--) operator()(); }
};
XorShift randdev;
template<typename T> inline T rand(T l, T h) { return uniform_int_distribution<T>(l, h)(randdev); }
template<> inline double rand<double>(double l, double h) { return uniform_real_distribution<double>(l, h)(randdev); }
template<> inline float rand<float>(float l, float h) { return uniform_real_distribution<float>(l, h)(randdev); }

#if defined(_WIN32) || defined(_WIN64)
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#elif defined(__GNUC__)
#else
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
namespace {
#define isvisiblechar(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 (; !isvisiblechar(cc); cc = getchar_unlocked());
            for (; isvisiblechar(cc); cc = getchar_unlocked())
                var.push_back(cc);
            return *this;
        }
        template<typename IT> void in(IT begin, IT end) { for (auto it = begin; it != end; ++it) *this >> *it; }
    };
    class MaiPrinter {
    public:
        template<typename T>
        void output_integer(T var) {
            if (var == 0) { putchar_unlocked('0'); return; }
            if (var < 0)
                putchar_unlocked('-'),
                var = -var;
            char stack[32]; int stack_p = 0;
            while (var)
                stack[stack_p++] = '0' + (var % 10),
                var /= 10;
            while (stack_p)
                putchar_unlocked(stack[--stack_p]);
        }
        inline MaiPrinter& operator<<(char c) { putchar_unlocked(c); return *this; }
        inline MaiPrinter& operator<<(int var) { output_integer<int>(var); return *this; }
        inline MaiPrinter& operator<<(long long var) { output_integer<long long>(var); return *this; }
        inline MaiPrinter& operator<<(char* str_p) { while (*str_p) putchar_unlocked(*(str_p++)); return *this; }
        inline MaiPrinter& operator<<(const string& str) {
            const char* p = str.c_str();
            const char* l = p + str.size();
            while (p < l) putchar_unlocked(*p++);
            return *this;
        }
        template<typename IT> void join(IT begin, IT end, char sep = '\n') { for (auto it = begin; it != end; ++it) *this << *it << sep; }
    };
}
MaiScanner scanner;
MaiPrinter printer;


#define TIME chrono::system_clock::now()
#define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count())


// Edge構造体を定義する無向グラフ
class GraphE {
public:
    typedef int W_T;
    struct Edge {
        int u, v;
        W_T value;
        Edge(int from = 0, int to = 0, W_T value = 0) :u(from), v(to), value(value) {}
        inline int to(int _v) const { return _v == v ? u : v; }
    };
    size_t n;
    vector<vector<int>> vertex_to;
    vector<Edge> edges;

    GraphE(int n = 1) :n(n), vertex_to(n) { }

    void resize(size_t _n) {
        n = _n;
        vertex_to.resize(_n);
    }
    void connect(int from, int to, W_T val = 0) {
        vertex_to[(size_t)from].push_back((int)edges.size());
        vertex_to[(size_t)to].push_back((int)edges.size());
        edges.emplace_back(from, to, val);
    }
};



// Rectangle
struct Rect {
    int top, left, bottom, right;
    Rect(int t = 0, int l = 0, int b = 0, int r = 0) :top(t), left(l), bottom(b), right(r) { }
    inline int area() { return (right - left + 1)*(bottom - top + 1); }
    inline bool operator==(Rect r) const { return top == r.top&&left == r.left&&bottom == r.bottom&&right == r.right; }
    inline bool operator<(Rect r) const { return make_tuple(top, left, bottom, right) < make_tuple(r.top, r.left, r.bottom, r.right); }
};


using u64 = uint64_t;


#if defined(__GNUC__)
inline long long popcountll(long long z) {
    return __builtin_popcountll(z);
}
#else
inline long long popcountll(long long z) {
    return bitset<64>(z).count();
}
#endif


auto beginTime = TIME;


// 問題文と入力
const int N = 60, K = 500;
int L[K];
u64 A[N];
const int Lmax = 25;

// 長さiの長方形のインデックス
// L[j]=iであるようなjの集合が格納される．
vector<int> idxsL[Lmax + 1];

//
vector<Rect> result[Lmax + 1];


// workspace
u64 my_A[N], my_Atr[N];


inline void apply(u64 f[N], u64 ftr[N], Rect r) {
    u64 mask;
    mask = (((1ull << (r.right +1)) - 1) ^ ((1ull << r.left) - 1));
    iterate(y, r.top, r.bottom + 1) {
        f[y] ^= mask;
    }
    mask = (((1ull << (r.bottom + 1)) - 1) ^ ((1ull << r.top) - 1));
    iterate(x, r.left, r.right + 1) {
        ftr[x] ^= mask;
    }
}
inline void apply(u64 f[N], Rect r) {
    u64 mask = (((1ull << (r.right + 1)) - 1) ^ ((1ull << r.left) - 1));
    iterate(y, r.top, r.bottom + 1) {
        f[y] ^= mask;
    }
}



// 
void input() {

    int n, k;
    scanner >> n >> k;
    assert(n == N && k == K);
    scanner.in(L, L + K);
    repeat(i, N) {
        string str; scanner >> str;
        u64 u;
        repeat(j, N) A[i] |= u64(str[j] == '0')<<j; // << ============== スコア最小を目指す
    }

    // - - - - -

    repeat(i, K)
        idxsL[L[i]].push_back(i);
}



//
void solve1() {

    copy(A, A+N, my_A);

    repeat(i, N) repeat(j, N) my_Atr[j] |= ((my_A[i] & (1ull << j)) >> j) << i;

    diterate(l, Lmax, 1) {
        repeat(_, idxsL[l].size()) {

            int best_score = -1;
            Rect best_rect;
            decltype(randdev()) best_seed;

            // 水平方向に置く場合を全探索
            // 探索
            repeat(y, N) {
                u64 mask = (1ull << l) - 1;

                repeat(x, N + 1 - l) {
                    int score = popcountll(my_A[y] & mask);
                    score += (!!(my_A[y] & (1ull << x)) * !!(my_A[y] & (1ull << (x + l - 1)))) * 5;
                    if (best_score < score || (best_score == score && randdev() & 1))
                        best_score = score,
                        best_rect = Rect(y, x, y, x + l - 1);
                    mask <<= 1;
                }
            }

            // 垂直方向に置く場合を全探索
            // 探索
            repeat(x, N) {
                u64 mask = (1ull << l) - 1;
                repeat(y, N + 1 - l) {
                    int score = popcountll(my_Atr[x] & mask);
                    score += (!!(my_Atr[x] & (1ull << y)) * !!(my_Atr[x] & (1ull << (y + l - 1)))) * 5;
                    if (best_score < score || (best_score == score && randdev() & 1))
                        best_score = score,
                        best_rect = Rect(y, x, y + l - 1, x);
                    mask <<= 1;
                }
            }


            result[l].push_back(best_rect);

            apply(my_A, my_Atr, best_rect);
        }
    }
}



//
void solve2() {

    // 調整
    diterate(l, Lmax, 1) {
        for (Rect& rect : result[l]) {
            bool changed = false;
            Rect rect_old = rect;
            if (rect.left == rect.right) {
                int x = rect.left;
                if (0 < rect.top && (my_A[rect.top - 1] & (1ull << x)) && (my_A[rect.bottom] & (1ull << x)))
                    --rect.top, --rect.bottom, changed = true;
                else if (rect.bottom < N - 1 && (my_A[rect.top] & (1ull << x)) && (my_A[rect.bottom + 1] & (1ull << x)))
                    ++rect.top, ++rect.bottom, changed = true;
            }
            else if (rect.top == rect.bottom) {
                int y = rect.top;
                if (0 < rect.left && (my_A[y] & (1ull << (rect.left - 1))) && (my_A[y] & (1ull << (rect.right))))
                    --rect.left, --rect.right, changed = true;
                else if (rect.right < N - 1 && (my_A[y] & (1ull << (rect.left))) && (my_A[y] & (1ull << (rect.right + 1))))
                    ++rect.left, ++rect.right, changed = true;
            }

            // todo:sppedup
            if (changed) {
                apply(my_A, my_Atr, rect_old);
                apply(my_A, my_Atr, rect);
            }
        }
    }
}



//
void solve3() {


}



//
void burning_stage() {
    return;

    //while (MILLISEC(TIME - beginTime) < 960)
    {
    }

}



//
void solve_final() {

    // l in 1
    {
        const int l = 1;
        {
            int cnt = idxsL[1].size();

            Rect best_rect;

            // 探索
            repeat(y, N) repeat(x, N) {
                int score = 0;
                if (my_A[y]&(1ull<<x)) {
                    result[1].push_back(Rect(y, x, y, x));
                    // apply(my_A, best_rect);
                    if (--cnt <= 0) {
                        y = N, x = N; break;
                    }
                }
            }

        }
    }
}



//
void output() {

    vector<Rect> answer(K);

    iterate(l, 1, Lmax + 1) repeat(i, idxsL[l].size()) {
        answer[idxsL[l][i]] = result[l][i];
    }

    for (Rect r : answer)
        printf("%d %d %d %d\n", r.top + 1, r.left + 1, r.bottom + 1, r.right + 1);

}



int main() {

    input();
    solve1();
    solve2();
    burning_stage();
    solve_final();
    output();



    return 0;
}