oj.uz

Submission #1018305

# Submission time Handle Problem Language Result Execution time Memory
1018305 2024-07-09T18:39:04 Z tmarcinkevicius Soccer Stadium (IOI23_soccer) C++17
29.5 / 100
 265 ms 47696 KB 
#include "soccer.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
#define f first
#define s second

bool CheckIfStadium(int N, vector<vector<int>> F)
{
    pii minRow, maxRow;
    bool possible = true;
    int state = 0;
    int fullCount = 0;
    vector<pii> rows;
    pii prev;

    for (int i = 0; i < N; i++)
    {
        int start = N;
        int end = 0;
        int openCount = 0;
        for (int j = 0; j < N; j++)
        {
            if (F[i][j] == 0)
            {
                fullCount++;
                if (openCount == 0)
                {
                    openCount++;
                }
                else if (openCount == 2)
                {
                    openCount++;
                    break;
                }
                start = min(start, j);
                end = max(end, j);
            }
            else
            {
                if (openCount == 1)
                {
                    openCount++;
                }
            }
        }

        // cout << "i = " << i << ", {" << start << ", " << end << "}, cnt = " << openCount << '\n';

        if (openCount >= 3)
        {
            possible = false;
        }

        for (pii p : rows)
        {
            if (!((start <= p.f && end >= p.s) || (start >= p.f && end <= p.s)))
            {
                possible = false;
                break;
            }
        }

        if (!possible)
            break;

        rows.push_back({start, end});

        if (i == 0)
        {
            minRow = {start, end};
            maxRow = {start, end};

            prev = {start, end};
            continue;
        }

        // cout << "min: {" << minRow.f << ", " << minRow.s << "}, max: {" << maxRow.f << ", " << maxRow.s << "}\n";

        if (state == 0 && start <= maxRow.f && end >= maxRow.s)
        {
            maxRow = {start, end};

            prev = {start, end};
            continue;
        }
        else if (start >= prev.f && end <= prev.s && ((start >= minRow.f && end <= minRow.s) || (start <= minRow.f && end >= minRow.s)))
        {
            state = 1;
            minRow = {max(minRow.f, start), min(minRow.s, end)};

            prev = {start, end};
            continue;
        }

        possible = false;
        break;
    }

    return possible;
}

int biggest_stadium(int N, vector<vector<int>> F)
{

    bool isStadium = CheckIfStadium(N, F);
    int treeCount = 0;

    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < N; j++)
        {
            treeCount += F[i][j];
        }
    }

    if (isStadium)
    {
        return N * N - treeCount;
    }
    else
    {
        if (treeCount == 1)
        {
            for (int i = 0; i < N; i++)
            {
                for (int j = 0; j < N; j++)
                {
                    if (!F[i][j])
                        continue;

                    int ans = N * N;
                    ans -= min(i + 1, N - i) * min(j + 1, N - j);
                    return ans;
                }
            }
        }

        return 0;
    }
}

int biggest_stadium2(int N, vector<vector<int>> F)
{
    vector<vector<int>> prefixLine(N), prefixCol(N);

    for (int i = 0; i < N; i++)
    {
        prefixLine[i] = vector<int>(N, 0);

        prefixLine[i][0] = F[i][0];

        for (int j = 1; j < N; j++)
        {
            prefixLine[i][j] = prefixLine[i][j - 1] + F[i][j];
        }
    }

    for (int i = 0; i < N; i++)
    {
        prefixCol[i] = vector<int>(N, 0);

        prefixCol[i][0] = F[0][i];

        for (int j = 1; j < N; j++)
        {
            prefixCol[i][j] = prefixCol[i][j - 1] + F[j][i];
        }
    }

    set<pii> freeCells;
    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < N; j++)
        {
            if (F[i][j] == 0)
            {
                freeCells.insert({i, j});
            }
        }
    }

    bool possible = true;
    for (pii p1 : freeCells)
    {
        for (pii p2 : freeCells)
        {
            if (p1 == p2)
                continue;

            if (p1.f == p2.f)
            {
                int sum = prefixLine[p1.f][max(p1.s, p2.s)];

                if (min(p1.s, p2.s) > 0)
                {
                    sum -= prefixLine[p1.f][min(p1.s, p2.s) - 1];
                }
                if (sum != 0)
                {
                    // cout << "{" << p1.f << ", " << p1.s << "} - {" << p2.f << ", " << p2.s << "}\n";
                    possible = false;
                    break;
                }
            }
            else if (p1.s == p2.s)
            {
                int sum = prefixCol[p1.s][max(p1.f, p2.f)];

                if (min(p1.f, p2.f) > 0)
                {
                    sum -= prefixCol[p1.s][min(p1.f, p2.f) - 1];
                }
                if (sum != 0)
                {
                    // cout << "{" << p1.f << ", " << p1.s << "} - {" << p2.f << ", " << p2.s << "}\n";
                    possible = false;
                    break;
                }
            }
            else
            {
                // cout << "check {" << p1.f << ", " << p1.s << "} - {" << p2.f << ", " << p2.s << "}\n";
                int sum1 = prefixLine[p1.f][max(p1.s, p2.s)] + prefixCol[p2.s][max(p1.f, p2.f)];
                int sum2 = prefixLine[p2.f][max(p1.s, p2.s)] + prefixCol[p1.s][max(p1.f, p2.f)];

                if (min(p1.s, p2.s) > 0)
                {
                    sum1 -= prefixLine[p1.f][min(p1.s, p2.s) - 1];
                    sum2 -= prefixLine[p2.f][min(p1.s, p2.s) - 1];
                }
                if (min(p1.f, p2.f) > 0)
                {
                    sum1 -= prefixCol[p2.s][min(p1.f, p2.f) - 1];
                    sum2 -= prefixCol[p1.s][min(p1.f, p2.f) - 1];
                }

                // cout << "sums: " << sum1 << " " << sum2 << '\n';
                // cout << "s1: " << prefixLine[p1.f][max(p1.s, p2.s)] - prefixLine[p1.f][min(p1.s, p2.s)] << '\n';

                if (sum1 != 0 && sum2 != 0)
                {
                    // cout << "{" << p1.f << ", " << p1.s << "} - {" << p2.f << ", " << p2.s << "}\n";
                    possible = false;
                    break;
                }
            }
        }

        if (!possible)
            break;
    }

    if (possible)
    {
        return freeCells.size();
    }
    else
    {
        return 0;
    }
}

// int main()
// {
//     int count = 0;
//     for (int num = 0; num < (1 << 25); num++)
//     {
//         if (num % 100 == 0)
//         {
//             cout << "----" << num << '\n';
//         }
//         vector<vector<int>> vec(5);
//         bitset<25> bSet(num);

//         for (int i = 0; i < 5; i++)
//         {
//             vec[i] = vector<int>(5);
//             for (int j = 0; j < 5; j++)
//             {
//                 vec[i][j] = bSet[5 * i + j];
//             }
//         }

//         int res = biggest_stadium(5, vec);
//         int res2 = biggest_stadium2(5, vec);

//         if (res != res2)
//         {
//             cout << "\nfound: " << count << '\n';
//             count++;
//             for (int i = 0; i < 5; i++)
//             {
//                 for (int j = 0; j < 5; j++)
//                 {
//                     cout << vec[i][j];
//                 }
//                 cout << '\n';
//             }

//             cout << "different: " << res << " " << res2 << '\n';
//             return 0;
//         }
//     }
// }

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 344 KB partial

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 1 ms 348 KB ok
8 Correct 13 ms 3420 KB ok
9 Correct 206 ms 47636 KB ok

Subtask #2
2.0 / 8.0

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

Subtask #3
5.5 / 22.0

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

Subtask #4
4.5 / 18.0

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

Subtask #5
4.0 / 16.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 344 KB partial
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Partially correct 0 ms 348 KB partial
7 Partially correct 0 ms 348 KB partial
8 Partially correct 0 ms 348 KB partial
9 Partially correct 1 ms 348 KB partial
10 Partially correct 0 ms 348 KB partial
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Partially correct 0 ms 348 KB partial
14 Partially correct 0 ms 348 KB partial
15 Partially correct 0 ms 348 KB partial
16 Correct 1 ms 348 KB ok
17 Partially correct 1 ms 348 KB partial
18 Partially correct 0 ms 348 KB partial
19 Partially correct 0 ms 348 KB partial
20 Partially correct 0 ms 348 KB partial
21 Partially correct 0 ms 348 KB partial
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 348 KB ok
24 Partially correct 0 ms 344 KB partial
25 Partially correct 0 ms 348 KB partial
26 Partially correct 0 ms 348 KB partial
27 Partially correct 0 ms 344 KB partial
28 Partially correct 1 ms 348 KB partial
29 Partially correct 1 ms 344 KB partial
30 Partially correct 1 ms 348 KB partial
31 Partially correct 1 ms 348 KB partial
32 Partially correct 0 ms 348 KB partial
33 Partially correct 0 ms 348 KB partial
34 Correct 0 ms 348 KB ok
35 Correct 0 ms 348 KB ok
36 Partially correct 0 ms 348 KB partial
37 Partially correct 0 ms 348 KB partial
38 Partially correct 0 ms 348 KB partial
39 Partially correct 0 ms 348 KB partial
40 Partially correct 0 ms 348 KB partial
41 Partially correct 0 ms 348 KB partial
42 Partially correct 15 ms 3164 KB partial
43 Partially correct 14 ms 3164 KB partial
44 Partially correct 12 ms 3420 KB partial
45 Partially correct 12 ms 3224 KB partial
46 Partially correct 12 ms 3160 KB partial
47 Partially correct 12 ms 3164 KB partial
48 Correct 13 ms 3224 KB ok
49 Partially correct 13 ms 3420 KB partial
50 Partially correct 12 ms 3420 KB partial
51 Partially correct 13 ms 3160 KB partial
52 Partially correct 19 ms 3416 KB partial
53 Partially correct 12 ms 3416 KB partial
54 Partially correct 12 ms 3416 KB partial
55 Partially correct 13 ms 3416 KB partial
56 Partially correct 14 ms 3416 KB partial
57 Partially correct 12 ms 3416 KB partial
58 Partially correct 13 ms 3420 KB partial
59 Partially correct 14 ms 3220 KB partial

Subtask #6
7.5 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 344 KB partial
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 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 13 ms 3420 KB ok
10 Correct 206 ms 47636 KB ok
11 Partially correct 0 ms 348 KB partial
12 Partially correct 0 ms 348 KB partial
13 Partially correct 0 ms 348 KB partial
14 Partially correct 1 ms 348 KB partial
15 Partially correct 0 ms 348 KB partial
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Partially correct 0 ms 348 KB partial
19 Partially correct 0 ms 348 KB partial
20 Partially correct 0 ms 348 KB partial
21 Correct 1 ms 348 KB ok
22 Partially correct 1 ms 348 KB partial
23 Partially correct 0 ms 348 KB partial
24 Partially correct 0 ms 348 KB partial
25 Partially correct 0 ms 348 KB partial
26 Partially correct 0 ms 348 KB partial
27 Correct 0 ms 348 KB ok
28 Correct 0 ms 348 KB ok
29 Partially correct 0 ms 344 KB partial
30 Partially correct 0 ms 348 KB partial
31 Partially correct 0 ms 348 KB partial
32 Partially correct 0 ms 344 KB partial
33 Partially correct 1 ms 348 KB partial
34 Partially correct 1 ms 344 KB partial
35 Partially correct 1 ms 348 KB partial
36 Partially correct 1 ms 348 KB partial
37 Partially correct 0 ms 348 KB partial
38 Partially correct 0 ms 348 KB partial
39 Correct 0 ms 348 KB ok
40 Correct 0 ms 348 KB ok
41 Partially correct 0 ms 348 KB partial
42 Partially correct 0 ms 348 KB partial
43 Partially correct 0 ms 348 KB partial
44 Partially correct 0 ms 348 KB partial
45 Partially correct 0 ms 348 KB partial
46 Partially correct 0 ms 348 KB partial
47 Partially correct 15 ms 3164 KB partial
48 Partially correct 14 ms 3164 KB partial
49 Partially correct 12 ms 3420 KB partial
50 Partially correct 12 ms 3224 KB partial
51 Partially correct 12 ms 3160 KB partial
52 Partially correct 12 ms 3164 KB partial
53 Correct 13 ms 3224 KB ok
54 Partially correct 13 ms 3420 KB partial
55 Partially correct 12 ms 3420 KB partial
56 Partially correct 13 ms 3160 KB partial
57 Partially correct 19 ms 3416 KB partial
58 Partially correct 12 ms 3416 KB partial
59 Partially correct 12 ms 3416 KB partial
60 Partially correct 13 ms 3416 KB partial
61 Partially correct 14 ms 3416 KB partial
62 Partially correct 12 ms 3416 KB partial
63 Partially correct 13 ms 3420 KB partial
64 Partially correct 14 ms 3220 KB partial
65 Partially correct 219 ms 47384 KB partial
66 Partially correct 217 ms 47376 KB partial
67 Partially correct 217 ms 47440 KB partial
68 Partially correct 203 ms 47440 KB partial
69 Partially correct 217 ms 47444 KB partial
70 Partially correct 194 ms 47444 KB partial
71 Partially correct 194 ms 47380 KB partial
72 Partially correct 231 ms 47384 KB partial
73 Correct 210 ms 47632 KB ok
74 Correct 219 ms 47444 KB ok
75 Partially correct 200 ms 47444 KB partial
76 Partially correct 255 ms 47396 KB partial
77 Partially correct 211 ms 47384 KB partial
78 Partially correct 218 ms 47380 KB partial
79 Partially correct 192 ms 47444 KB partial
80 Partially correct 265 ms 47440 KB partial
81 Partially correct 211 ms 47376 KB partial
82 Partially correct 211 ms 47444 KB partial
83 Partially correct 255 ms 47444 KB partial
84 Partially correct 215 ms 47444 KB partial
85 Partially correct 221 ms 47696 KB partial
86 Partially correct 209 ms 47444 KB partial
87 Partially correct 211 ms 47444 KB partial
88 Partially correct 213 ms 47696 KB partial
89 Partially correct 202 ms 47384 KB partial
90 Partially correct 207 ms 47388 KB partial
91 Partially correct 206 ms 47444 KB partial
92 Partially correct 239 ms 47444 KB partial
93 Partially correct 201 ms 47440 KB partial
94 Partially correct 207 ms 47440 KB partial
95 Partially correct 208 ms 47440 KB partial
96 Partially correct 195 ms 47440 KB partial
97 Partially correct 200 ms 47440 KB partial
98 Partially correct 196 ms 47396 KB partial
99 Partially correct 211 ms 47440 KB partial
100 Partially correct 245 ms 47380 KB partial
101 Partially correct 196 ms 47396 KB partial
102 Partially correct 197 ms 47696 KB partial
103 Partially correct 226 ms 47404 KB partial
104 Partially correct 200 ms 47440 KB partial
105 Partially correct 193 ms 47392 KB partial
106 Partially correct 217 ms 47400 KB partial
107 Partially correct 202 ms 47396 KB partial
108 Partially correct 209 ms 47440 KB partial
109 Partially correct 215 ms 47444 KB partial