oj.uz

Submission #963800

# Submission time Handle Problem Language Result Execution time Memory
963800 2024-04-15T17:12:43 Z tutis Soccer Stadium (IOI23_soccer) C++17
70 / 100
 4500 ms 126616 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);
        }
    }
    vector<vector<int>> on(N);
    for (int x = 0; x < N; x++) {
        on[x] = vector<int>(N);
        int lst = N;
        for (int y = N - 1; y >= 0; y--) {
            if (C[x][y] == 1) {
                lst = y;
            }
            on[x][y] = lst;
        }
    }
    auto ones = [&](int x, int y0, int y1) -> vector<int> {
        if (y0 > y1) {
            return {};
        }
        vector<int> p;
        while (y0 <= y1) {
            int nxt = on[x][y0];
            if (nxt >= y1 + 1) {
                break;
            }
            p.push_back(nxt);
            y0 = nxt + 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;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok
2 Correct 1 ms 440 KB ok
3 Correct 1 ms 344 KB ok
4 Correct 1 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 1 ms 604 KB ok
8 Correct 17 ms 4868 KB ok
9 Correct 277 ms 71252 KB ok

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok
2 Correct 1 ms 440 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 348 KB ok
9 Correct 1 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 412 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 440 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 1 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 1 ms 348 KB ok
10 Correct 1 ms 348 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 412 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 0 ms 348 KB ok
20 Correct 0 ms 440 KB ok
21 Correct 1 ms 344 KB ok
22 Correct 1 ms 436 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 0 ms 348 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 1 ms 348 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 440 KB ok
4 Correct 1 ms 344 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 1 ms 348 KB ok
12 Correct 1 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 412 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 348 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 440 KB ok
23 Correct 1 ms 344 KB ok
24 Correct 1 ms 436 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok
27 Correct 0 ms 348 KB ok
28 Correct 1 ms 348 KB ok
29 Correct 0 ms 348 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 1 ms 344 KB ok
34 Correct 1 ms 348 KB ok
35 Correct 1 ms 344 KB ok
36 Correct 0 ms 348 KB ok
37 Correct 0 ms 348 KB ok
38 Correct 1 ms 348 KB ok
39 Correct 0 ms 436 KB ok
40 Correct 1 ms 348 KB ok
41 Correct 1 ms 348 KB ok

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 440 KB ok
4 Correct 1 ms 344 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 1 ms 348 KB ok
12 Correct 1 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 412 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 348 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 440 KB ok
23 Correct 1 ms 344 KB ok
24 Correct 1 ms 436 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok
27 Correct 0 ms 348 KB ok
28 Correct 1 ms 348 KB ok
29 Correct 0 ms 348 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 1 ms 344 KB ok
34 Correct 1 ms 348 KB ok
35 Correct 1 ms 344 KB ok
36 Correct 0 ms 348 KB ok
37 Correct 0 ms 348 KB ok
38 Correct 1 ms 348 KB ok
39 Correct 0 ms 436 KB ok
40 Correct 1 ms 348 KB ok
41 Correct 1 ms 348 KB ok
42 Correct 126 ms 8196 KB ok
43 Correct 131 ms 8608 KB ok
44 Correct 53 ms 5836 KB ok
45 Correct 38 ms 5336 KB ok
46 Correct 102 ms 7304 KB ok
47 Correct 17 ms 4700 KB ok
48 Correct 17 ms 4744 KB ok
49 Correct 17 ms 4736 KB ok
50 Correct 47 ms 4740 KB ok
51 Correct 38 ms 5840 KB ok
52 Correct 22 ms 4956 KB ok
53 Correct 18 ms 4696 KB ok
54 Correct 18 ms 4848 KB ok
55 Correct 18 ms 4744 KB ok
56 Correct 17 ms 4700 KB ok
57 Correct 103 ms 9816 KB ok
58 Correct 110 ms 10428 KB ok
59 Correct 136 ms 11224 KB ok

Subtask #6
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 440 KB ok
4 Correct 1 ms 344 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 604 KB ok
9 Correct 17 ms 4868 KB ok
10 Correct 277 ms 71252 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 1 ms 348 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 1 ms 348 KB ok
17 Correct 1 ms 348 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 0 ms 348 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 412 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 0 ms 348 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok
27 Correct 0 ms 440 KB ok
28 Correct 1 ms 344 KB ok
29 Correct 1 ms 436 KB ok
30 Correct 0 ms 348 KB ok
31 Correct 0 ms 348 KB ok
32 Correct 0 ms 348 KB ok
33 Correct 1 ms 348 KB ok
34 Correct 0 ms 348 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 1 ms 344 KB ok
39 Correct 1 ms 348 KB ok
40 Correct 1 ms 344 KB ok
41 Correct 0 ms 348 KB ok
42 Correct 0 ms 348 KB ok
43 Correct 1 ms 348 KB ok
44 Correct 0 ms 436 KB ok
45 Correct 1 ms 348 KB ok
46 Correct 1 ms 348 KB ok
47 Correct 126 ms 8196 KB ok
48 Correct 131 ms 8608 KB ok
49 Correct 53 ms 5836 KB ok
50 Correct 38 ms 5336 KB ok
51 Correct 102 ms 7304 KB ok
52 Correct 17 ms 4700 KB ok
53 Correct 17 ms 4744 KB ok
54 Correct 17 ms 4736 KB ok
55 Correct 47 ms 4740 KB ok
56 Correct 38 ms 5840 KB ok
57 Correct 22 ms 4956 KB ok
58 Correct 18 ms 4696 KB ok
59 Correct 18 ms 4848 KB ok
60 Correct 18 ms 4744 KB ok
61 Correct 17 ms 4700 KB ok
62 Correct 103 ms 9816 KB ok
63 Correct 110 ms 10428 KB ok
64 Correct 136 ms 11224 KB ok
65 Execution timed out 4549 ms 126616 KB Time limit exceeded
66 Halted 0 ms 0 KB -