oj.uz

Submission #963782

# Submission time Handle Problem Language Result Execution time Memory
963782 2024-04-15T16:40:36 Z tutis Soccer Stadium (IOI23_soccer) C++17
70 / 100
 4500 ms 110820 KB 
//#include "soccer.h"

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int biggest_stadium(int N, std::vector<std::vector<int>> C) {
    vector<vector<int>> S(N);
    auto fS = [&](int x, int y) {
        if (x < 0 || y < 0) {
            return 0;
        }
        if (x >= N) {
            x = N - 1;
        }
        if (y >= N) {
            y = N - 1;
        }
        return S[x][y];
    };
    auto sm = [&](int x1, int x2, int y1, int y2) -> int {
        return fS(x2, y2) - fS(x1 - 1, y2) - fS(x2, y1 - 1) + fS(x1 - 1, y1 - 1);
    };
    for (int i = 0; i < N; i++) {
        S[i] = vector<int>(N);
        for (int j = 0; j < N; j++) {
            S[i][j] = C[i][j];
            S[i][j] += fS(i - 1, j) + fS(i, j - 1) - fS(i - 1, j - 1);
        }
    }
    auto ones = [&](int x, int y0, int y1) -> vector<int> {
        if (y0 > y1) {
            return {};
        }
        vector<int> p;
        while (y0 <= y1) {
            if (sm(x, x, y0, y1) == 0) {
                break;
            }
            int lo = y0;
            int hi = y1;
            while (lo < hi) {
                int m = (lo + hi) / 2;
                if (sm(x, x, y0, m) != 0) {
                    hi = m;
                } else {
                    lo = m + 1;
                }
            }
            p.push_back(lo);
            y0 = lo + 1;
        }
        p.push_back(y1 + 1);
        return p;
    };
    int best = 0;
    vector<pair<pair<int, int>, pair<int, int>>> V;
    function<void(int, int, int, int)> dfs = [&](int x1, int x2, int y1, int y2) -> void {
        if (y1 > y2) {
            return;
        }
        if (x2 != N - 1 && sm(x2 + 1, x2 + 1, y1, y2) == 0) {
            return;
        }
        if (x1 == 0) {
            V.push_back({{x1, x2},
                         {y1, y2}});
            return;
        }
        if (sm(x1 - 1, x1 - 1, y1, y2) != 0) {
            V.push_back({{x1, x2},
                         {y1, y2}});
        }
        if (sm(x1 - 1, x1 - 1, y1, y2) == 0) {
            int lo = 0;
            int hi = x1 - 1;
            while (lo < hi) {
                int m = (lo + hi) / 2;
                if (sm(m, x1 - 1, y1, y2) == 0) {
                    hi = m;
                } else {
                    lo = m + 1;
                }
            }
            dfs(lo, x2, y1, y2);
            return;
        }
        int lst = y1 - 1;
        for (int y: ones(x1 - 1, y1, y2)) {
            dfs(x1 - 1, x2, lst + 1, y - 1);
            lst = y;
        }
    };
    for (int x = 0; x < N; x++) {
        int lst = -1;
        for (int y = 0; y <= N; y++) {
            if (y == N || C[x][y] == 1) {
                if (lst + 1 > y - 1) {
                    lst = y;
                    continue;
                }
                if (x != N - 1 && sm(x + 1, x + 1, lst + 1, y - 1) == 0) {
                    lst = y;
                    continue;
                }
                dfs(x, x, lst + 1, y - 1);
                lst = y;
            }
        }
    }
    sort(V.begin(), V.end(),
         [&](pair<pair<int, int>, pair<int, int>> a, pair<pair<int, int>, pair<int, int>> b) {
             return a.second.second - a.second.first > b.second.second - b.second.first;
         });
    map<pair<pair<int, int>, pair<int, int>>, int> M;
    auto check = [&](pair<pair<int, int>, pair<int, int>> i, int area) {
        auto [xp, yp] = i;
        auto [x0, x1] = xp;
        auto [y0, y1] = yp;
        if (y0 > y1) {
            return;
        }
        int lo = 0;
        int hi = x0;
        while (lo < hi) {
            int m = (lo + hi) / 2;
            if (sm(m, x0 - 1, y0, y1) == 0) {
                hi = m;
            } else {
                lo = m + 1;
            }
        }
        area += (y1 - y0 + 1) * (x0 - lo);
        x0 = lo;
        lo = x1;
        hi = N - 1;
        while (lo < hi) {
            int m = (lo + hi + 1) / 2;
            if (sm(x1 + 1, m, y0, y1) == 0) {
                lo = m;
            } else {
                hi = m - 1;
            }
        }

        area += (y1 - y0 + 1) * (lo - x1);
        x1 = lo;
        M[{{x0, x1},
           {y0, y1}}] = max(M[{{x0, x1},
                               {y0, y1}}],
                            area);
    };
    auto expL = [&](pair<pair<int, int>, pair<int, int>> i, int area) {
        auto [xp, yp] = i;
        auto [x0, x1] = xp;
        auto [y0, y1] = yp;
        if (y0 > y1) {
            return;
        }
        int lst = y0 - 1;
        for (int y: ones(x0 - 1, y0, y1)) {
            check({{x0 - 1,  x1},
                   {lst + 1, y - 1}}, area + (y - 1) - (lst + 1) + 1);
            lst = y;
        }
    };
    auto expR = [&](pair<pair<int, int>, pair<int, int>> i, int area) {
        auto [xp, yp] = i;
        auto [x0, x1] = xp;
        auto [y0, y1] = yp;
        if (y0 > y1) {
            return;
        }
        int lst = y0 - 1;
        for (int y: ones(x1 + 1, y0, y1)) {
            check({{x0,      x1 + 1},
                   {lst + 1, y - 1}}, area + (y - 1) - (lst + 1) + 1);
            lst = y;
        }
    };
    for (auto i: V) {
        auto [xp, yp] = i;
        auto [x0, x1] = xp;
        auto [y0, y1] = yp;
        int dp = (x1 - x0 + 1) * (y1 - y0 + 1);
        if (M.count(i)) {
            dp = M[i];
        }
        int ans = dp;
        best = max(best, ans);
        if (x0 != 0) {
            expL(i, ans);
        }
        if (x1 != N - 1) {
            expR(i, ans);
        }
    }

    return best;
}
//
//int main() {
//    std::cout << biggest_stadium(3, {{1, 0, 0},
//                                     {0, 0, 1},
//                                     {1, 0, 1}}) << std::endl;
//    return 0;
//}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 432 KB ok
5 Correct 1 ms 352 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 1 ms 444 KB ok
8 Correct 20 ms 3896 KB ok
9 Correct 285 ms 55176 KB ok

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 1 ms 500 KB ok
4 Correct 1 ms 348 KB ok
5 Correct 0 ms 352 KB ok
6 Correct 0 ms 412 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 352 KB ok
9 Correct 1 ms 348 KB ok
10 Correct 0 ms 344 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 1 ms 500 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 352 KB ok
7 Correct 0 ms 412 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 352 KB ok
10 Correct 1 ms 348 KB ok
11 Correct 0 ms 344 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 1 ms 348 KB ok
18 Correct 1 ms 344 KB ok
19 Correct 0 ms 432 KB ok
20 Correct 1 ms 348 KB ok
21 Correct 1 ms 348 KB ok
22 Correct 1 ms 348 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 0 ms 348 KB ok
25 Correct 0 ms 344 KB ok
26 Correct 0 ms 352 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 432 KB ok
6 Correct 1 ms 500 KB ok
7 Correct 1 ms 348 KB ok
8 Correct 0 ms 352 KB ok
9 Correct 0 ms 412 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 0 ms 352 KB ok
12 Correct 1 ms 348 KB ok
13 Correct 0 ms 344 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 1 ms 348 KB ok
20 Correct 1 ms 344 KB ok
21 Correct 0 ms 432 KB ok
22 Correct 1 ms 348 KB ok
23 Correct 1 ms 348 KB ok
24 Correct 1 ms 348 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok
27 Correct 0 ms 344 KB ok
28 Correct 0 ms 352 KB ok
29 Correct 0 ms 344 KB ok
30 Correct 1 ms 344 KB ok
31 Correct 1 ms 348 KB ok
32 Correct 1 ms 348 KB ok
33 Correct 0 ms 348 KB ok
34 Correct 0 ms 348 KB ok
35 Correct 1 ms 436 KB ok
36 Correct 1 ms 348 KB ok
37 Correct 1 ms 348 KB ok
38 Correct 0 ms 348 KB ok
39 Correct 1 ms 348 KB ok
40 Correct 1 ms 348 KB ok
41 Correct 1 ms 600 KB ok

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 432 KB ok
6 Correct 1 ms 500 KB ok
7 Correct 1 ms 348 KB ok
8 Correct 0 ms 352 KB ok
9 Correct 0 ms 412 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 0 ms 352 KB ok
12 Correct 1 ms 348 KB ok
13 Correct 0 ms 344 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 1 ms 348 KB ok
20 Correct 1 ms 344 KB ok
21 Correct 0 ms 432 KB ok
22 Correct 1 ms 348 KB ok
23 Correct 1 ms 348 KB ok
24 Correct 1 ms 348 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok
27 Correct 0 ms 344 KB ok
28 Correct 0 ms 352 KB ok
29 Correct 0 ms 344 KB ok
30 Correct 1 ms 344 KB ok
31 Correct 1 ms 348 KB ok
32 Correct 1 ms 348 KB ok
33 Correct 0 ms 348 KB ok
34 Correct 0 ms 348 KB ok
35 Correct 1 ms 436 KB ok
36 Correct 1 ms 348 KB ok
37 Correct 1 ms 348 KB ok
38 Correct 0 ms 348 KB ok
39 Correct 1 ms 348 KB ok
40 Correct 1 ms 348 KB ok
41 Correct 1 ms 600 KB ok
42 Correct 156 ms 7124 KB ok
43 Correct 143 ms 7824 KB ok
44 Correct 56 ms 4740 KB ok
45 Correct 51 ms 4424 KB ok
46 Correct 122 ms 6352 KB ok
47 Correct 17 ms 3676 KB ok
48 Correct 18 ms 3928 KB ok
49 Correct 24 ms 3708 KB ok
50 Correct 65 ms 3924 KB ok
51 Correct 42 ms 4752 KB ok
52 Correct 18 ms 3932 KB ok
53 Correct 18 ms 3848 KB ok
54 Correct 18 ms 3972 KB ok
55 Correct 19 ms 3932 KB ok
56 Correct 21 ms 3676 KB ok
57 Correct 126 ms 8908 KB ok
58 Correct 153 ms 9432 KB ok
59 Correct 153 ms 10200 KB ok

Subtask #6
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 432 KB ok
6 Correct 1 ms 352 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 444 KB ok
9 Correct 20 ms 3896 KB ok
10 Correct 285 ms 55176 KB ok
11 Correct 1 ms 500 KB ok
12 Correct 1 ms 348 KB ok
13 Correct 0 ms 352 KB ok
14 Correct 0 ms 412 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 0 ms 352 KB ok
17 Correct 1 ms 348 KB ok
18 Correct 0 ms 344 KB ok
19 Correct 0 ms 348 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 348 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 1 ms 348 KB ok
25 Correct 1 ms 344 KB ok
26 Correct 0 ms 432 KB ok
27 Correct 1 ms 348 KB ok
28 Correct 1 ms 348 KB ok
29 Correct 1 ms 348 KB ok
30 Correct 0 ms 348 KB ok
31 Correct 0 ms 348 KB ok
32 Correct 0 ms 344 KB ok
33 Correct 0 ms 352 KB ok
34 Correct 0 ms 344 KB ok
35 Correct 1 ms 344 KB ok
36 Correct 1 ms 348 KB ok
37 Correct 1 ms 348 KB ok
38 Correct 0 ms 348 KB ok
39 Correct 0 ms 348 KB ok
40 Correct 1 ms 436 KB ok
41 Correct 1 ms 348 KB ok
42 Correct 1 ms 348 KB ok
43 Correct 0 ms 348 KB ok
44 Correct 1 ms 348 KB ok
45 Correct 1 ms 348 KB ok
46 Correct 1 ms 600 KB ok
47 Correct 156 ms 7124 KB ok
48 Correct 143 ms 7824 KB ok
49 Correct 56 ms 4740 KB ok
50 Correct 51 ms 4424 KB ok
51 Correct 122 ms 6352 KB ok
52 Correct 17 ms 3676 KB ok
53 Correct 18 ms 3928 KB ok
54 Correct 24 ms 3708 KB ok
55 Correct 65 ms 3924 KB ok
56 Correct 42 ms 4752 KB ok
57 Correct 18 ms 3932 KB ok
58 Correct 18 ms 3848 KB ok
59 Correct 18 ms 3972 KB ok
60 Correct 19 ms 3932 KB ok
61 Correct 21 ms 3676 KB ok
62 Correct 126 ms 8908 KB ok
63 Correct 153 ms 9432 KB ok
64 Correct 153 ms 10200 KB ok
65 Execution timed out 4556 ms 110820 KB Time limit exceeded
66 Halted 0 ms 0 KB -