結果

問題 No.307 最近色塗る問題多くない?
ユーザー mai
提出日時 2019-02-03 14:07:23
言語 C++17(1z)
(gcc 9.2.0)
結果
AC  
実行時間 20 ms
コード長 8,826 Byte
コンパイル時間 2,632 ms
使用メモリ 8,492 KB
最終ジャッジ日時 2020-01-13 11:56:52

テストケース

テストケース表示
入力 結果 実行時間
使用メモリ
0_0.txt AC 0 ms
3,340 KB
0_1.txt AC 4 ms
3,408 KB
0_2.txt AC 0 ms
3,136 KB
0_3.txt AC 0 ms
3,224 KB
1_0.txt AC 4 ms
3,264 KB
1_1.txt AC 0 ms
3,408 KB
1_2.txt AC 4 ms
3,292 KB
2_0.txt AC 4 ms
3,548 KB
2_1.txt AC 12 ms
4,820 KB
2_2.txt AC 8 ms
4,008 KB
2_3.txt AC 4 ms
3,484 KB
2_4.txt AC 8 ms
3,820 KB
3_0.txt AC 4 ms
3,328 KB
99_system_test1.txt AC 4 ms
3,916 KB
case_00.txt AC 4 ms
3,312 KB
case_01.txt AC 0 ms
3,532 KB
case_02.txt AC 4 ms
3,512 KB
case_03.txt AC 8 ms
4,148 KB
case_04.txt AC 12 ms
5,448 KB
case_05.txt AC 12 ms
5,528 KB
case_06.txt AC 0 ms
3,324 KB
case_07.txt AC 16 ms
6,480 KB
case_08.txt AC 12 ms
6,352 KB
case_10.txt AC 16 ms
6,704 KB
case_11.txt AC 16 ms
6,916 KB
case_12.txt AC 20 ms
8,344 KB
case_13.txt AC 16 ms
8,492 KB
case_14.txt AC 16 ms
6,456 KB
case_15.txt AC 20 ms
6,956 KB
system_test1.txt AC 4 ms
3,708 KB
x_add_0.txt AC 16 ms
7,012 KB
x_add_1.txt AC 16 ms
6,500 KB
x_add_2.txt AC 12 ms
6,016 KB
x_add_3.txt AC 4 ms
3,804 KB
x_add_4.txt AC 4 ms
3,708 KB
x_add_5.txt AC 4 ms
3,796 KB
テストケース一括ダウンロード

ソースコード

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

using namespace std;
using ll = long long int;

#define debugos cout
#define debug(v) {printf("L%d %s > ",__LINE__,#v);debugos<<(v)<<endl;}
#define debugv(v) {printf("L%d %s > ",__LINE__,#v);for(auto e:(v)){debugos<<e<<" ";}debugos<<endl;}
#define debuga(m,w) {printf("L%d %s > ",__LINE__,#m);for(int x=0;x<(w);x++){debugos<<(m)[x]<<" ";}debugos<<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++){debugos<<(m)[y][x]<<" ";}debugos<<endl;}}
#define ALL(v) (v).begin(),(v).end()
#define repeat(cnt,l) for(auto cnt=decltype(l)();(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& os, const Vec& a) {
    os << '['; for (const auto& e : a) os << ' ' << e << ' '; os << ']'; return os;
}
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& chmax(T& to, const T& val) { return to = max(to, val); }
template<typename T> inline T& chmin(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);
template<typename T, typename Random = decltype(randdev), typename enable_if<is_integral<T>::value>::type* = nullptr>
inline T rand(T l, T h, Random& rand = randdev) { return uniform_int_distribution<T>(l, h)(rand); }
template<typename T, typename Random = decltype(randdev), typename enable_if<is_floating_point<T>::value>::type* = nullptr>
inline T rand(T l, T h, Random& rand = randdev) { return uniform_real_distribution<T>(l, h)(rand); }

#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) noexcept {
            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() noexcept { return getchar_unlocked(); }
        inline MaiScanner& operator>>(int& var) noexcept { input_integer<int>(var); return *this; }
        inline MaiScanner& operator>>(long long& var) noexcept { 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> inline 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) noexcept {
            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) noexcept { putchar_unlocked(c); return *this; }
        inline MaiPrinter& operator<<(int var) noexcept { output_integer<int>(var); return *this; }
        inline MaiPrinter& operator<<(long long var) noexcept { output_integer<long long>(var); return *this; }
        inline MaiPrinter& operator<<(char* str_p) noexcept { 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 = ' ') { for (bool b = 0; begin != end; ++begin, b = 1) b ? *this << sep << *begin : *this << *begin; }
    };
}
MaiScanner scanner;
MaiPrinter printer;


class Unionfind {
public:
    vector<int> data;
    Unionfind(size_t size) : data(size, -1) { }
    bool connect(size_t x, size_t y) {
        x = root(x); y = root(y);
        if (x != y) {
            if (data[y] < data[x]) swap(x, y);
            data[x] += data[y]; data[y] = (int)x;
        }
        return x != y;
    }
    inline bool same(size_t x, size_t y) {
        return root(x) == root(y);
    }
    inline size_t root(size_t x) {
        return (size_t)(data[x] < 0 ? x : data[x] = root(data[x]));
    }
    inline int size(size_t x) {
        return -data[root(x)];
    }
};


struct YX {
    int y, x;
};


// 


int H, W;
Unionfind unionfind(0);
bool colorMtx[200][200];
unique_ptr<vector<int>> adjacents[40000];


inline bool valid(int y, int x) noexcept {
    return 0 <= y && 0 <= x && y < H && x < W;
}

inline int yx2i(int y, int x) noexcept {
    return x + y * W;
}
inline pair<int, int> i2pair(int i) noexcept {
    return make_pair(i / W, i%W);
}

inline unique_ptr<vector<int>> mergeS(unique_ptr<vector<int>>&& q1, unique_ptr<vector<int>>&& q2) {
    if (q1->size() > q2->size())
        q1->swap(*q2);
    q2->insert(q2->end(), ALL(*q1));
    return move(q2);
}


//


void preprocess() {
    repeat(y, H) {
        repeat(x, W) {
            if (y < H - 1 && colorMtx[y][x] == colorMtx[y + 1][x])
                unionfind.connect(yx2i(y, x), yx2i(y + 1, x));
            if (x < W - 1 && colorMtx[y][x] == colorMtx[y][x + 1])
                unionfind.connect(yx2i(y, x), yx2i(y, x + 1));
        }
    }
    repeat(y, H) {
        repeat(x, W) {
            int r1 = unionfind.root(yx2i(y, x));
            if (y < H - 1 && colorMtx[y][x] != colorMtx[y + 1][x]) {
                int r2 = unionfind.root(yx2i(y + 1, x));
                if (!adjacents[r1]) adjacents[r1] = make_unique<vector<int>>();
                if (!adjacents[r2]) adjacents[r2] = make_unique<vector<int>>();
                adjacents[r1]->push_back(r2);
                adjacents[r2]->push_back(r1);
            }
            if (x < W - 1 && colorMtx[y][x] != colorMtx[y][x + 1]) {
                int r2 = unionfind.root(yx2i(y, x + 1));
                if (!adjacents[r1]) adjacents[r1] = make_unique<vector<int>>();
                if (!adjacents[r2]) adjacents[r2] = make_unique<vector<int>>();
                adjacents[r1]->push_back(r2);
                adjacents[r2]->push_back(r1);
            }
        }
    }
}


inline bool& pickColor(int y, int x) {
    int i = unionfind.root(yx2i(y, x));
    return colorMtx[i / W][i%W];
}


void query(int py, int px, bool pcolor) {
    if (pcolor == pickColor(py, px)) return;
    pickColor(py, px) = pcolor;

    int r = unionfind.root(yx2i(py, px));
    auto new_adjacents = make_unique<vector<int>>();
    for (int a : *adjacents[r]) {
        int r2 = unionfind.root(a);
        if (unionfind.same(r, r2)) continue;
        new_adjacents = move(mergeS(move(adjacents[r2]), move(new_adjacents)));
        unionfind.connect(r, r2);
    }
    //debugv(*new_adjacents);
    adjacents[r].release();
    r = unionfind.root(yx2i(py, px));
    //debug(r);
    adjacents[r] = move(new_adjacents);
}


int main() {
    scanner >> H >> W;
    unionfind = Unionfind(H*W);

    repeat(y, H) {
        repeat(x, W) {
            int a; scanner >> a;
            colorMtx[y][x] = a;
        }
    }

    preprocess();

    int q;
    scanner >> q;
    repeat(i, q) {
        int r, c, x;
        scanner >> r >> c >> x;
        query(r - 1, c - 1, x);
    }

    repeat(y, H) {
        repeat(x, W) {
            printer << (int)(pickColor(y, x)) << ' ';
        }
        printer << '\n';
    }

    return 0;
}
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