oj.uz

Submission #842172

# Submission time Handle Problem Language Result Execution time Memory
842172 2023-09-02T13:17:03 Z Tenis0206 Soccer Stadium (IOI23_soccer) C++17
35.5 / 100
 294 ms 49048 KB 
#include <bits/stdc++.h>
#include "soccer.h"

using namespace std;

const int nmax = 2e3;

int n;

int a[nmax + 5][nmax + 5];
int aux[nmax + 5][nmax + 5];

int st[nmax + 5], dr[nmax + 5];

int Minst[nmax + 5], Maxdr[nmax + 5];

bool verif()
{
    for(int i=0; i<=n; i++)
    {
        st[i] = n + 1;
        dr[i] = 0;
    }
    for(int i=1; i<=n; i++)
    {
        for(int j=1; j<=n; j++)
        {
            if(a[i][j]==0 && a[i][j - 1]==1)
            {
                if(st[i]!=n+1)
                {
                    return false;
                }
                st[i] = j;
            }
            if(a[i][j]==0)
            {
                dr[i] = j;
            }
        }
    }
    Minst[0] = n + 1;
    for(int i=1;i<=n;i++)
    {
        Minst[i] = min(Minst[i - 1], st[i]);
        Maxdr[i] = max(Maxdr[i - 1], dr[i]);
    }
    bool desc = false, start = false;
    stack<int> stl, str;
    for(int i=1; i<=n; i++)
    {
        if(st[i]!=n+1 && st[i - 1]==n+1 && start)
        {
            return false;
        }

        if(st[i]!=n+1)
        {
            start = true;

            if(st[i - 1]!=n+1 && st[i] < st[i - 1] && desc)
            {
                return false;
            }
            if(st[i - 1]!=n+1 && st[i] > st[i - 1])
            {
                desc = true;
            }

            if(dr[i - 1] && dr[i] > dr[i - 1] && desc)
            {
                return false;
            }
            if(dr[i - 1] && dr[i] < dr[i - 1])
            {
                desc = true;
            }

            int u_st = 0, u_dr = 0;

            while(!stl.empty() && st[i] >= st[stl.top()])
            {
                stl.pop();
            }
            if(stl.empty())
            {
                u_st = 0;
            }
            else
            {
                u_st = stl.top();
            }
            stl.push(i);

            while(!str.empty() && dr[i] <= dr[str.top()])
            {
                str.pop();
            }
            if(str.empty())
            {
                u_dr = 0;
            }
            else
            {
                u_dr = str.top();
            }
            str.push(i);

            if(Minst[u_dr] < st[i])
            {
                return false;
            }
            if(Maxdr[u_st] > dr[i])
            {
                return false;
            }
        }
    }
    return true;
}

int solve1()
{
    int x = 0, y = 0;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
        {
            if(a[i][j])
            {
                x = i, y = j;
            }
        }
    }
    int Max = 0;
    Max = max(Max, n * n - x * y);
    Max = max(Max, n * n - x * (n - y + 1));
    Max = max(Max, n * n - (n - x + 1) * y);
    Max = max(Max, n * n - (n - x + 1) * (n - y + 1));
    return Max;
}

int solve2()
{
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
        {
            aux[i][j] = a[i][j];
        }
    }
    int rez = 0;
    for(int mask=0;mask<(1<<(n*n));mask++)
    {
        int cnt = 0;
        for(int i=1;i<=n;i++)
        {
            for(int j=1;j<=n;j++)
            {
                a[i][j] = 1;
                int bit = (i - 1) * n + (j - 1);
                if((mask & (1<<bit)) != 0 && !aux[i][j])
                {
                    a[i][j] = 0;
                    ++cnt;
                }
            }
        }
        if(verif())
        {
            rez = max(rez, cnt);
        }
    }
    return rez;
}

int biggest_stadium(int N, std::vector<std::vector<int>> F)
{
    n = N;
    int nre = 0;
    for(int i=1; i<=n; i++)
    {
        for(int j=1; j<=n; j++)
        {
            a[i][j] = F[i - 1][j - 1];
            nre += (1 - a[i][j]);
        }
    }
    for(int i=0; i<=n; i++)
    {
        a[i][0] = a[0][i] = a[i][n + 1] = a[n + 1][i] = 1;
    }
    bool ok = verif();
    if(ok)
    {
        return nre;
    }
    if(nre==n*n-1)
    {
        return solve1();
    }
    else if(n<=3)
    {
        return solve2();
    }
    return 0;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB partial

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB ok
2 Correct 0 ms 2396 KB ok
3 Correct 1 ms 2396 KB ok
4 Correct 1 ms 2396 KB ok
5 Correct 0 ms 2396 KB ok
6 Correct 0 ms 2396 KB ok
7 Correct 1 ms 2468 KB ok
8 Correct 17 ms 8540 KB ok
9 Correct 255 ms 48672 KB ok

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB ok
2 Correct 0 ms 2396 KB ok
3 Correct 1 ms 2396 KB ok
4 Correct 0 ms 2396 KB ok
5 Correct 1 ms 2396 KB ok
6 Correct 1 ms 2396 KB ok
7 Correct 1 ms 2396 KB ok
8 Correct 0 ms 2396 KB ok
9 Correct 1 ms 2396 KB ok
10 Correct 1 ms 2396 KB ok
11 Correct 1 ms 2396 KB ok
12 Correct 1 ms 2396 KB ok
13 Correct 0 ms 2396 KB ok

Subtask #3
5.5 / 22.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB partial
2 Correct 1 ms 2396 KB ok
3 Correct 0 ms 2396 KB ok
4 Correct 1 ms 2396 KB ok
5 Correct 0 ms 2396 KB ok
6 Correct 1 ms 2396 KB ok
7 Correct 1 ms 2396 KB ok
8 Correct 1 ms 2396 KB ok
9 Correct 0 ms 2396 KB ok
10 Correct 1 ms 2396 KB ok
11 Correct 1 ms 2396 KB ok
12 Correct 1 ms 2396 KB ok
13 Correct 1 ms 2396 KB ok
14 Correct 0 ms 2396 KB ok
15 Partially correct 1 ms 2396 KB partial
16 Partially correct 0 ms 2396 KB partial
17 Partially correct 1 ms 2396 KB partial
18 Partially correct 0 ms 2396 KB partial
19 Partially correct 1 ms 2396 KB partial
20 Correct 0 ms 2396 KB ok
21 Correct 1 ms 2396 KB ok
22 Partially correct 0 ms 2396 KB partial
23 Partially correct 1 ms 2396 KB partial
24 Partially correct 0 ms 2396 KB partial
25 Partially correct 1 ms 2648 KB partial
26 Partially correct 1 ms 2396 KB partial

Subtask #4
4.5 / 18.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB partial
2 Correct 1 ms 2396 KB ok
3 Correct 0 ms 2396 KB ok
4 Correct 1 ms 2396 KB ok
5 Correct 1 ms 2396 KB ok
6 Correct 1 ms 2396 KB ok
7 Correct 0 ms 2396 KB ok
8 Correct 1 ms 2396 KB ok
9 Correct 1 ms 2396 KB ok
10 Correct 1 ms 2396 KB ok
11 Correct 0 ms 2396 KB ok
12 Correct 1 ms 2396 KB ok
13 Correct 1 ms 2396 KB ok
14 Correct 1 ms 2396 KB ok
15 Correct 1 ms 2396 KB ok
16 Correct 0 ms 2396 KB ok
17 Partially correct 1 ms 2396 KB partial
18 Partially correct 0 ms 2396 KB partial
19 Partially correct 1 ms 2396 KB partial
20 Partially correct 0 ms 2396 KB partial
21 Partially correct 1 ms 2396 KB partial
22 Correct 0 ms 2396 KB ok
23 Correct 1 ms 2396 KB ok
24 Partially correct 0 ms 2396 KB partial
25 Partially correct 1 ms 2396 KB partial
26 Partially correct 0 ms 2396 KB partial
27 Partially correct 1 ms 2648 KB partial
28 Partially correct 1 ms 2396 KB partial
29 Partially correct 0 ms 2396 KB partial
30 Partially correct 1 ms 2396 KB partial
31 Partially correct 1 ms 2396 KB partial
32 Partially correct 0 ms 2396 KB partial
33 Partially correct 0 ms 2396 KB partial
34 Correct 1 ms 2392 KB ok
35 Correct 1 ms 2396 KB ok
36 Partially correct 1 ms 2396 KB partial
37 Partially correct 1 ms 2396 KB partial
38 Partially correct 1 ms 2396 KB partial
39 Partially correct 1 ms 2392 KB partial
40 Partially correct 1 ms 2396 KB partial
41 Partially correct 0 ms 2396 KB partial

Subtask #5
4.0 / 16.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB partial
2 Correct 1 ms 2396 KB ok
3 Correct 0 ms 2396 KB ok
4 Correct 1 ms 2396 KB ok
5 Correct 1 ms 2396 KB ok
6 Correct 1 ms 2396 KB ok
7 Correct 0 ms 2396 KB ok
8 Correct 1 ms 2396 KB ok
9 Correct 1 ms 2396 KB ok
10 Correct 1 ms 2396 KB ok
11 Correct 0 ms 2396 KB ok
12 Correct 1 ms 2396 KB ok
13 Correct 1 ms 2396 KB ok
14 Correct 1 ms 2396 KB ok
15 Correct 1 ms 2396 KB ok
16 Correct 0 ms 2396 KB ok
17 Partially correct 1 ms 2396 KB partial
18 Partially correct 0 ms 2396 KB partial
19 Partially correct 1 ms 2396 KB partial
20 Partially correct 0 ms 2396 KB partial
21 Partially correct 1 ms 2396 KB partial
22 Correct 0 ms 2396 KB ok
23 Correct 1 ms 2396 KB ok
24 Partially correct 0 ms 2396 KB partial
25 Partially correct 1 ms 2396 KB partial
26 Partially correct 0 ms 2396 KB partial
27 Partially correct 1 ms 2648 KB partial
28 Partially correct 1 ms 2396 KB partial
29 Partially correct 0 ms 2396 KB partial
30 Partially correct 1 ms 2396 KB partial
31 Partially correct 1 ms 2396 KB partial
32 Partially correct 0 ms 2396 KB partial
33 Partially correct 0 ms 2396 KB partial
34 Correct 1 ms 2392 KB ok
35 Correct 1 ms 2396 KB ok
36 Partially correct 1 ms 2396 KB partial
37 Partially correct 1 ms 2396 KB partial
38 Partially correct 1 ms 2396 KB partial
39 Partially correct 1 ms 2392 KB partial
40 Partially correct 1 ms 2396 KB partial
41 Partially correct 0 ms 2396 KB partial
42 Partially correct 16 ms 8540 KB partial
43 Partially correct 17 ms 8580 KB partial
44 Partially correct 16 ms 8536 KB partial
45 Partially correct 16 ms 8540 KB partial
46 Partially correct 17 ms 8540 KB partial
47 Partially correct 16 ms 8540 KB partial
48 Correct 16 ms 8540 KB ok
49 Partially correct 16 ms 8536 KB partial
50 Partially correct 17 ms 8536 KB partial
51 Partially correct 16 ms 8540 KB partial
52 Partially correct 19 ms 8540 KB partial
53 Partially correct 17 ms 8540 KB partial
54 Partially correct 16 ms 8540 KB partial
55 Partially correct 16 ms 8356 KB partial
56 Partially correct 17 ms 8536 KB partial
57 Partially correct 16 ms 8540 KB partial
58 Partially correct 17 ms 8536 KB partial
59 Partially correct 16 ms 8364 KB partial

Subtask #6
7.5 / 30.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 2392 KB partial
2 Correct 1 ms 2396 KB ok
3 Correct 0 ms 2396 KB ok
4 Correct 1 ms 2396 KB ok
5 Correct 1 ms 2396 KB ok
6 Correct 0 ms 2396 KB ok
7 Correct 0 ms 2396 KB ok
8 Correct 1 ms 2468 KB ok
9 Correct 17 ms 8540 KB ok
10 Correct 255 ms 48672 KB ok
11 Correct 1 ms 2396 KB ok
12 Correct 0 ms 2396 KB ok
13 Correct 1 ms 2396 KB ok
14 Correct 1 ms 2396 KB ok
15 Correct 1 ms 2396 KB ok
16 Correct 0 ms 2396 KB ok
17 Correct 1 ms 2396 KB ok
18 Correct 1 ms 2396 KB ok
19 Correct 1 ms 2396 KB ok
20 Correct 1 ms 2396 KB ok
21 Correct 0 ms 2396 KB ok
22 Partially correct 1 ms 2396 KB partial
23 Partially correct 0 ms 2396 KB partial
24 Partially correct 1 ms 2396 KB partial
25 Partially correct 0 ms 2396 KB partial
26 Partially correct 1 ms 2396 KB partial
27 Correct 0 ms 2396 KB ok
28 Correct 1 ms 2396 KB ok
29 Partially correct 0 ms 2396 KB partial
30 Partially correct 1 ms 2396 KB partial
31 Partially correct 0 ms 2396 KB partial
32 Partially correct 1 ms 2648 KB partial
33 Partially correct 1 ms 2396 KB partial
34 Partially correct 0 ms 2396 KB partial
35 Partially correct 1 ms 2396 KB partial
36 Partially correct 1 ms 2396 KB partial
37 Partially correct 0 ms 2396 KB partial
38 Partially correct 0 ms 2396 KB partial
39 Correct 1 ms 2392 KB ok
40 Correct 1 ms 2396 KB ok
41 Partially correct 1 ms 2396 KB partial
42 Partially correct 1 ms 2396 KB partial
43 Partially correct 1 ms 2396 KB partial
44 Partially correct 1 ms 2392 KB partial
45 Partially correct 1 ms 2396 KB partial
46 Partially correct 0 ms 2396 KB partial
47 Partially correct 16 ms 8540 KB partial
48 Partially correct 17 ms 8580 KB partial
49 Partially correct 16 ms 8536 KB partial
50 Partially correct 16 ms 8540 KB partial
51 Partially correct 17 ms 8540 KB partial
52 Partially correct 16 ms 8540 KB partial
53 Correct 16 ms 8540 KB ok
54 Partially correct 16 ms 8536 KB partial
55 Partially correct 17 ms 8536 KB partial
56 Partially correct 16 ms 8540 KB partial
57 Partially correct 19 ms 8540 KB partial
58 Partially correct 17 ms 8540 KB partial
59 Partially correct 16 ms 8540 KB partial
60 Partially correct 16 ms 8356 KB partial
61 Partially correct 17 ms 8536 KB partial
62 Partially correct 16 ms 8540 KB partial
63 Partially correct 17 ms 8536 KB partial
64 Partially correct 16 ms 8364 KB partial
65 Partially correct 248 ms 48796 KB partial
66 Partially correct 256 ms 48676 KB partial
67 Partially correct 251 ms 48672 KB partial
68 Partially correct 251 ms 48676 KB partial
69 Partially correct 261 ms 48680 KB partial
70 Partially correct 289 ms 48676 KB partial
71 Partially correct 247 ms 48696 KB partial
72 Partially correct 252 ms 48672 KB partial
73 Correct 250 ms 48676 KB ok
74 Correct 277 ms 48672 KB ok
75 Partially correct 256 ms 48720 KB partial
76 Partially correct 248 ms 48676 KB partial
77 Partially correct 267 ms 48692 KB partial
78 Partially correct 294 ms 48676 KB partial
79 Partially correct 262 ms 48676 KB partial
80 Partially correct 268 ms 48672 KB partial
81 Partially correct 253 ms 48676 KB partial
82 Partially correct 289 ms 48668 KB partial
83 Partially correct 254 ms 48720 KB partial
84 Partially correct 265 ms 48692 KB partial
85 Partially correct 260 ms 48672 KB partial
86 Partially correct 287 ms 48672 KB partial
87 Partially correct 280 ms 48792 KB partial
88 Partially correct 259 ms 48676 KB partial
89 Partially correct 257 ms 48672 KB partial
90 Partially correct 265 ms 48676 KB partial
91 Partially correct 252 ms 48676 KB partial
92 Partially correct 252 ms 48676 KB partial
93 Partially correct 248 ms 48672 KB partial
94 Partially correct 257 ms 48668 KB partial
95 Partially correct 252 ms 48720 KB partial
96 Partially correct 248 ms 48724 KB partial
97 Partially correct 254 ms 48724 KB partial
98 Partially correct 254 ms 48672 KB partial
99 Partially correct 247 ms 48672 KB partial
100 Partially correct 249 ms 48720 KB partial
101 Partially correct 246 ms 49048 KB partial
102 Partially correct 247 ms 48724 KB partial
103 Partially correct 255 ms 48676 KB partial
104 Partially correct 251 ms 48724 KB partial
105 Partially correct 248 ms 48684 KB partial
106 Partially correct 240 ms 48676 KB partial
107 Partially correct 246 ms 48680 KB partial
108 Partially correct 263 ms 48680 KB partial
109 Partially correct 262 ms 48676 KB partial