結果

問題 No.5002 stick xor
ユーザー maimai
提出日時 2018-03-16 21:35:33
言語 C++17(clang)
(17.0.6 + boost 1.83.0)
結果
TLE  
実行時間 -
コード長 11,464 bytes
コンパイル時間 13,480 ms
実行使用メモリ 3,340 KB
スコア 0
最終ジャッジ日時 2020-08-23 04:36:15
ジャッジサーバーID
(参考情報)
judge10 / judge10
このコードへのチャレンジ
(要ログイン)

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 TLE -
testcase_01 TLE -
testcase_02 TLE -
testcase_03 TLE -
testcase_04 TLE -
testcase_05 TLE -
testcase_06 TLE -
testcase_07 TLE -
testcase_08 TLE -
testcase_09 TLE -
testcase_10 TLE -
testcase_11 TLE -
testcase_12 TLE -
testcase_13 TLE -
testcase_14 TLE -
testcase_15 TLE -
testcase_16 TLE -
testcase_17 TLE -
testcase_18 TLE -
testcase_19 TLE -
testcase_20 TLE -
testcase_21 TLE -
testcase_22 TLE -
testcase_23 TLE -
testcase_24 TLE -
testcase_25 TLE -
testcase_26 TLE -
testcase_27 TLE -
testcase_28 TLE -
testcase_29 TLE -
testcase_30 TLE -
testcase_31 TLE -
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 #

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

using namespace std;
typedef long long int ll;

#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(decltype(l) 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))
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
template<typename T1, typename T2> ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
template<typename T> T& maxset(T& to, const T& val) { return to = max(to, val); }
template<typename T> T& minset(T& to, const T& val) { return to = min(to, val); }
void bye(string s, int code = 0) { cout << s << endl; exit(code); }
mt19937_64 randdev(8901016);
inline ll rand_range(ll l, ll h) {
    return uniform_int_distribution<ll>(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;



// ソートしてi番目の値は 元々idx[i]番目の値
// 元々i番目の値は ソートするとidxr[i]番目の値
template <typename ITER>
void sort_index(const ITER begin, const ITER end, vector<int> &idx, vector<int> &idxr) {
    size_t n = end - begin;
    idx.resize(n);
    idxr.resize(n);
    for (int i = 0; i < n; ++i) idx[i] = i;
    sort(idx.begin(), idx.end(), [&begin](int l, int r) {return begin[l] < begin[r]; });
    for (int i = 0; i < n; ++i) idxr[idx[i]] = i;
}



struct Stick {
    int len; // 実効長さ
    int idx1, idx2; // 元の棒のインデックス
    int len1, len2; // 元の棒の長さ

    Stick(int l1, int i1) :len(l1), idx1(i1), len1(l1) { }
    Stick(int l, int i1, int i2, int l1, int l2) :len(l), idx1(i1), idx2(i2), len1(l1), len2(l2) {
        if (len1 < len2) swap(len1, len2), swap(idx1, idx2);
    }

    inline bool single() const { return len == len1; }
};




int n, kei;
vector<int> len[55];
int aa[55][55];
vector<Stick> sticks;

int answers[2020][4];


int colsum[55][55], rowsum[55][55];

int main() {
    scanner >> n >> kei;

    repeat(i, kei) {
        int l;
        scanner >> l;
        len[l].push_back(i);
    }

    repeat(y, n) {
        string str;
        scanner >> str;
        repeat(x, n) {
            aa[y][x] = str[x] == '1';
        }
    }


    // step 1

    for (int l = 50; 4 <= l; --l) {
        while (!len[l].empty()) {

            int i = len[l].back();


            // 累積和
            repeat(y, n) {
                repeat(x, n) {
                    rowsum[y][x + 1] = rowsum[y][x] + aa[y][x];
                }
            }
            repeat(x, n) {
                repeat(y, n) {
                    colsum[x][y + 1] = colsum[x][y] + aa[y][x];
                }
            }

            // 貪欲
            array<int, 4> best_r = { 0,0,0,0 };
            repeat(y, n) {
                repeat(x, n) {
                    if (x + l <= n) {
                        maxset(best_r, array<int, 4>{rowsum[y][x + l] - rowsum[y][x], y, x, 0});
                    }
                    if (y + l <= n) {
                        maxset(best_r, array<int, 4>{colsum[x][y + l] - colsum[x][y], y, x, 1});
                    }
                }
            }

            if (best_r[0]*100/l < 75) {
                break;
            }

            if (best_r[3] == 0) {
                answers[i][0] = best_r[1] + 1; answers[i][1] = best_r[2] + 1;
                answers[i][2] = best_r[1] + 1; answers[i][3] = best_r[2] + l;
                repeat(t, l)
                    aa[best_r[1]][best_r[2] + t] ^= 1;
            }
            else if (best_r[3] == 1) {
                answers[i][0] = best_r[1] + 1; answers[i][1] = best_r[2] + 1;
                answers[i][2] = best_r[1] + l; answers[i][3] = best_r[2] + 1;
                repeat(t, l)
                    aa[best_r[1] + t][best_r[2]] ^= 1;
            }

            len[l].pop_back();
        }
    }


    // step2

    sticks.reserve(kei);

    for (int l = 50; 9 <= l; --l) {
        while (!len[l].empty()) {

            int t = l - 1;
            while (len[t].empty()) --t;
            sticks.emplace_back(l - t, len[l].back(), len[t].back(), l, t);
            len[l].pop_back();
            len[t].pop_back();
        }
    }

    for (int l = 1; l < 50; ++l) {
        while (!len[l].empty()) {
            sticks.emplace_back(l, len[l].back());
            len[l].pop_back();
        }
    }


    sort(ALL(sticks), [](const Stick& l, const Stick& r) {return l.len > r.len; });
    

    // step3

    for (const Stick& stick : sticks) {


        // 累積和
        repeat(y, n) {
            repeat(x, n) {
                rowsum[y][x + 1] = rowsum[y][x] + aa[y][x];
            }
        }
        repeat(x, n) {
            repeat(y, n) {
                colsum[x][y + 1] = colsum[x][y] + aa[y][x];
            }
        }

        // 貪欲
        int l = stick.len;
        array<int, 4> best_r = { 0,0,0,0 };
        repeat(y, n) {
            repeat(x, n) {
                if (x + l <= n) {
                    maxset(best_r, array<int, 4>{rowsum[y][x + l] - rowsum[y][x], y, x, 0});
                }
                if (y + l <= n) {
                    maxset(best_r, array<int, 4>{colsum[x][y + l] - colsum[x][y], y, x, 1});
                }
                assert(best_r[0] < 1e3);
            }
        }
        if (best_r[3] == 0) {
            if (stick.single()) {
                int i = stick.idx1;
                answers[i][0] = best_r[1] + 1; answers[i][1] = best_r[2] + 1;
                answers[i][2] = best_r[1] + 1; answers[i][3] = best_r[2] + l;
            }
            else {
                if (best_r[2] - stick.len2 < 0) {
                    answers[stick.idx1][0] = best_r[1] + 1; answers[stick.idx1][1] = best_r[2] + 1;
                    answers[stick.idx1][2] = best_r[1] + 1; answers[stick.idx1][3] = best_r[2] + stick.len1;
                    answers[stick.idx2][0] = best_r[1] + 1; answers[stick.idx2][1] = best_r[2] + l + 1;
                    answers[stick.idx2][2] = best_r[1] + 1; answers[stick.idx2][3] = best_r[2] + stick.len1;
                }
                else {
                    answers[stick.idx1][0] = best_r[1] + 1; answers[stick.idx1][1] = best_r[2] - stick.len2 + 1;
                    answers[stick.idx1][2] = best_r[1] + 1; answers[stick.idx1][3] = best_r[2] + l;
                    answers[stick.idx2][0] = best_r[1] + 1; answers[stick.idx2][1] = best_r[2] - stick.len2 + 1;
                    answers[stick.idx2][2] = best_r[1] + 1; answers[stick.idx2][3] = best_r[2];
                }
            }
            repeat(t, l)
                aa[best_r[1]][best_r[2] + t] ^= 1;
        }
        else if (best_r[3] == 1) {
            if (stick.single()) {
                int i = stick.idx1;
                answers[i][0] = best_r[1] + 1; answers[i][1] = best_r[2] + 1;
                answers[i][2] = best_r[1] + l; answers[i][3] = best_r[2] + 1;
            }
            else {
                if (best_r[1] - stick.len2 < 0) {
                    answers[stick.idx1][0] = best_r[1] + 1;          answers[stick.idx1][1] = best_r[2] + 1;
                    answers[stick.idx1][2] = best_r[1] + stick.len1; answers[stick.idx1][3] = best_r[2] + 1;
                    answers[stick.idx2][0] = best_r[1] + l + 1;      answers[stick.idx2][1] = best_r[2] + 1;
                    answers[stick.idx2][2] = best_r[1] + stick.len1; answers[stick.idx2][3] = best_r[2] + 1;
                }
                else {
                    answers[stick.idx1][0] = best_r[1] - stick.len2 + 1; answers[stick.idx1][1] = best_r[2] + 1;
                    answers[stick.idx1][2] = best_r[1] + l;              answers[stick.idx1][3] = best_r[2] + 1;
                    answers[stick.idx2][0] = best_r[1] - stick.len2 + 1; answers[stick.idx2][1] = best_r[2] + 1;
                    answers[stick.idx2][2] = best_r[1];                  answers[stick.idx2][3] = best_r[2] + 1;
                }
            }
            repeat(t, l)
                aa[best_r[1] + t][best_r[2]] ^= 1;
        }
    }

    repeat(i, kei) {
        printer
            << answers[i][0] << ' ' << answers[i][1] << ' '
            << answers[i][2] << ' ' << answers[i][3] << '\n';
    }

    // debugaa(aa, n, n);

    return 0;
}
0