oj.uz

Submission #1056272

# Submission time Handle Problem Language Result Execution time Memory
1056272 2024-08-13T08:34:01 Z Ignut Soccer Stadium (IOI23_soccer) C++17
25 / 100
 2524 ms 137044 KB 
/* Ignut
started: 13.08.2024
now: 13.08.2024
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*/

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

const int MAXN = 2222;
int n;
vector<vector<int>> f;

bool used[MAXN][MAXN];

vector<pair<int, int>> delta = {{0, -1}, {0, 1}, {-1, 0}, {1, 0}};

bool Good(int i, int j) {
    return i >= 0 && j >= 0 && i < n && j < n && f[i][j] == 0 && !used[i][j];
}

int cnt = 0;
void dfs(int i, int j) {
    cnt ++;
    used[i][j] = true;
    for (auto [di, dj] : delta) {
        int ci = i + di, cj = j + dj;
        if (Good(ci, cj)) {
            dfs(ci, cj);
        }
    }
}

int biggest_stadium(int N, vector<vector<int>> F) {
    // for (int i = 0; i < N; i ++) {
    //     for (int j = 0; j < N; j ++) {
    //         if (F[i][j] == 0) continue;
    //         int mn = N * N;
    //         mn = min(mn, (i + 1) * (j + 1));
    //         mn = min(mn, (N - i) * (N - j));
    //         mn = min(mn, (N - i) * (j + 1));
    //         mn = min(mn, (i + 1) * (N - j));
    //         return N * N - mn;
    //     }
    // }
    for (int i = 0; i < N; i ++)
        for (int j = 0; j < N; j ++)
            used[i][j] = false;

    n = N;
    f = F;
    int prev_l = -1, prev_r = -1;
    bool have_sm = false;
    for (int i = 0; i < N; i ++) {
        int first = -1, last = -1, cnt = 0;
        for (int j = 0; j < N; j ++) {
            if (F[i][j] == 1) continue;
            if (first == -1) first = j;
            last = j;
            cnt ++;
        }
        if (cnt > 0 && cnt != last - first + 1) return 1;

        if (prev_l == -1) {
            prev_l = first;
            prev_r = last;
            continue;
        }
        if (cnt == 0) continue;

        bool sm = false;
        if (first > prev_l || last < prev_r) sm = true;
        bool bg = false;
        if (first < prev_l || last > prev_r) bg = true;
        
        if (sm && bg) return 1;
        if (bg && have_sm) return 1;
        if (sm) have_sm = true;

        prev_l = first;
        prev_r = last;
    }

    prev_l = -1, prev_r = -1;
    have_sm = false;
    for (int j = 0; j < N; j ++) {
        int first = -1, last = -1, cnt = 0;
        for (int i = 0; i < N; i ++) {
            if (F[i][j] == 1) continue;
            if (first == -1) first = i;
            last = i;
            cnt ++;
        }
        if (cnt > 0 && cnt != last - first + 1) return 1;
     
        if (prev_l == -1) {
            prev_l = first;
            prev_r = last;
            continue;
        }
        if (cnt == 0) continue;

        bool sm = false;
        if (first > prev_l || last < prev_r) sm = true;
        bool bg = false;
        if (first < prev_l || last > prev_r) bg = true;
        
        if (sm && bg) return 1;
        if (bg && have_sm) return 1;
        if (sm) have_sm = true;
        
        prev_l = first;
        prev_r = last;
    }

    for (int i = 0; i < N; i ++) {
        for (int j = 0; j < N; j ++) {
            if (F[i][j] == 1) continue;
            int up = 0;
            for (int ii = i; ii >= 0; ii --) {
                if (F[ii][j] == 1) break;
                up ++;
            }
            int left = 0;
            for (int jj = j; jj >= 0; jj --) {
                if (F[i][jj] == 1) break;
                left ++;
            }
            if (Good(i - up, j - left)) return 1;

            int right = 0;
            for (int jj = j; jj < N; jj ++) {
                if (F[i][jj] == 1) break;
                right ++;
            }
            if (Good(i - up, j + right)) return 1;
        }
    }

    int i0, j0;
    for (int i = 0; i < N; i ++)
        for (int j = 0; j < N; j ++)
            if (F[i][j] == 0)
                i0 = i, j0 = j;
    cnt = 0;
    dfs(i0, j0);

    int sum = N * N;
    for (int i = 0; i < N; i ++)
        for (int j = 0; j < N; j ++)
            sum -= F[i][j];

    if (cnt != sum) return 1;
    
    return sum;
}

Compilation message

soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:169:8: warning: 'i0' may be used uninitialized in this function [-Wmaybe-uninitialized]
  169 |     dfs(i0, j0);
      |     ~~~^~~~~~~~
soccer.cpp:169:8: warning: 'j0' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #0
0.0 / 0.0

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

Subtask #1
1.5 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 Partially correct 0 ms 348 KB partial
7 Partially correct 1 ms 2652 KB partial
8 Partially correct 10 ms 5468 KB partial
9 Partially correct 172 ms 51792 KB partial

Subtask #2
2.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 0 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 0 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 0 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 0 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 0 ms 348 KB ok
15 Partially correct 0 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 344 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 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

Subtask #4
4.5 / 18.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 344 KB partial
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 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 0 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 0 ms 348 KB ok
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 Partially correct 0 ms 344 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 348 KB partial
25 Partially correct 0 ms 348 KB partial
26 Partially correct 0 ms 348 KB partial
27 Partially correct 0 ms 348 KB partial
28 Partially correct 0 ms 348 KB partial
29 Partially correct 1 ms 348 KB partial
30 Partially correct 0 ms 348 KB partial
31 Partially correct 0 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 444 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 344 KB partial

Subtask #5
4.0 / 16.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 344 KB partial
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 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 0 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 0 ms 348 KB ok
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 Partially correct 0 ms 344 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 348 KB partial
25 Partially correct 0 ms 348 KB partial
26 Partially correct 0 ms 348 KB partial
27 Partially correct 0 ms 348 KB partial
28 Partially correct 0 ms 348 KB partial
29 Partially correct 1 ms 348 KB partial
30 Partially correct 0 ms 348 KB partial
31 Partially correct 0 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 444 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 344 KB partial
42 Partially correct 11 ms 6032 KB partial
43 Partially correct 11 ms 5980 KB partial
44 Partially correct 11 ms 6032 KB partial
45 Partially correct 11 ms 5976 KB partial
46 Partially correct 12 ms 5908 KB partial
47 Partially correct 10 ms 5980 KB partial
48 Correct 52 ms 10996 KB ok
49 Partially correct 11 ms 5976 KB partial
50 Partially correct 11 ms 5908 KB partial
51 Partially correct 11 ms 5980 KB partial
52 Partially correct 13 ms 6156 KB partial
53 Partially correct 12 ms 5980 KB partial
54 Partially correct 14 ms 5980 KB partial
55 Partially correct 19 ms 5980 KB partial
56 Partially correct 18 ms 5976 KB partial
57 Partially correct 10 ms 5976 KB partial
58 Partially correct 10 ms 5980 KB partial
59 Partially correct 11 ms 5980 KB partial

Subtask #6
7.5 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 0 ms 344 KB partial
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 Partially correct 0 ms 348 KB partial
8 Partially correct 1 ms 2652 KB partial
9 Partially correct 10 ms 5468 KB partial
10 Partially correct 172 ms 51792 KB partial
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 0 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 0 ms 348 KB ok
22 Partially correct 0 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 344 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 348 KB partial
30 Partially correct 0 ms 348 KB partial
31 Partially correct 0 ms 348 KB partial
32 Partially correct 0 ms 348 KB partial
33 Partially correct 0 ms 348 KB partial
34 Partially correct 1 ms 348 KB partial
35 Partially correct 0 ms 348 KB partial
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 Correct 0 ms 348 KB ok
40 Correct 0 ms 348 KB ok
41 Partially correct 0 ms 444 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 344 KB partial
47 Partially correct 11 ms 6032 KB partial
48 Partially correct 11 ms 5980 KB partial
49 Partially correct 11 ms 6032 KB partial
50 Partially correct 11 ms 5976 KB partial
51 Partially correct 12 ms 5908 KB partial
52 Partially correct 10 ms 5980 KB partial
53 Correct 52 ms 10996 KB ok
54 Partially correct 11 ms 5976 KB partial
55 Partially correct 11 ms 5908 KB partial
56 Partially correct 11 ms 5980 KB partial
57 Partially correct 13 ms 6156 KB partial
58 Partially correct 12 ms 5980 KB partial
59 Partially correct 14 ms 5980 KB partial
60 Partially correct 19 ms 5980 KB partial
61 Partially correct 18 ms 5976 KB partial
62 Partially correct 10 ms 5976 KB partial
63 Partially correct 10 ms 5980 KB partial
64 Partially correct 11 ms 5980 KB partial
65 Partially correct 176 ms 59728 KB partial
66 Partially correct 176 ms 59800 KB partial
67 Partially correct 171 ms 59688 KB partial
68 Partially correct 161 ms 59728 KB partial
69 Partially correct 164 ms 59728 KB partial
70 Partially correct 160 ms 59732 KB partial
71 Partially correct 161 ms 59684 KB partial
72 Partially correct 159 ms 59548 KB partial
73 Correct 2407 ms 137044 KB ok
74 Correct 2524 ms 136788 KB ok
75 Partially correct 167 ms 59668 KB partial
76 Partially correct 178 ms 59796 KB partial
77 Partially correct 172 ms 59732 KB partial
78 Partially correct 178 ms 59796 KB partial
79 Partially correct 179 ms 59672 KB partial
80 Partially correct 161 ms 59548 KB partial
81 Partially correct 162 ms 59796 KB partial
82 Partially correct 166 ms 59732 KB partial
83 Partially correct 165 ms 59728 KB partial
84 Partially correct 238 ms 59728 KB partial
85 Partially correct 247 ms 59812 KB partial
86 Partially correct 298 ms 59672 KB partial
87 Partially correct 296 ms 59732 KB partial
88 Partially correct 167 ms 59732 KB partial
89 Partially correct 194 ms 59584 KB partial
90 Partially correct 174 ms 59732 KB partial
91 Partially correct 177 ms 59720 KB partial
92 Partially correct 169 ms 59552 KB partial
93 Partially correct 181 ms 59556 KB partial
94 Partially correct 173 ms 59556 KB partial
95 Partially correct 167 ms 59732 KB partial
96 Partially correct 208 ms 59728 KB partial
97 Partially correct 163 ms 59672 KB partial
98 Partially correct 170 ms 59732 KB partial
99 Partially correct 161 ms 59732 KB partial
100 Partially correct 163 ms 59552 KB partial
101 Partially correct 161 ms 59552 KB partial
102 Partially correct 158 ms 59732 KB partial
103 Partially correct 158 ms 59556 KB partial
104 Partially correct 157 ms 59796 KB partial
105 Partially correct 183 ms 59676 KB partial
106 Partially correct 159 ms 59796 KB partial
107 Partially correct 158 ms 59732 KB partial
108 Partially correct 167 ms 59728 KB partial
109 Partially correct 167 ms 59728 KB partial