oj.uz

Submission #1010496

# Submission time Handle Problem Language Result Execution time Memory
1010496 2024-06-29T07:21:28 Z ttamx Soccer Stadium (IOI23_soccer) C++17
70 / 100
 4500 ms 174280 KB 
#include "soccer.h"
#include <bits/stdc++.h>

using namespace std;

const int N=2005;

int n;
int a[N][N];
int top[N][N],bot[N][N],pre[N][N][2],dp[N][N];
vector<pair<int,int>> rect[N];
int ans;

int biggest_stadium(int _n,vector<vector<int>> _a){
    n=_n;
    for(int i=1;i<=n;i++)for(int j=1;j<=n;j++)a[i][j]=_a[i-1][j-1]^1;
    for(int i=1;i<=n;i++)for(int j=1;j<=n;j++)top[i][j]=a[i][j]?min(i,i>1?top[i-1][j]:n+1):n+1;
    for(int i=n;i>=1;i--)for(int j=1;j<=n;j++)bot[i][j]=a[i][j]?max(i,bot[i+1][j]):0;
    for(int i=1;i<=n;i++){
        int t=0,b=n+1;
        for(int j=1;j<=n;j++){
            for(int x=0;x<2;x++)pre[i][j][x]=a[i][j]==x?j:pre[i][j-1][x];
            if(a[i][j]){
                if(a[i][j-1]){
                    top[i][j]=max(top[i][j],top[i][j-1]);
                    bot[i][j]=min(bot[i][j],bot[i][j-1]);
                }
                rect[j-pre[i][j][0]].emplace_back(i,j);
            }
        }
    }
    for(int w=n;w>=1;w--)for(auto [i,j]:rect[w]){
        int l=pre[i][j][0]+1,r=j,t=top[i][j],b=bot[i][j];
        int h=b-t+1;
        int res=w*h+dp[i][j];
        ans=max(ans,res);
        if(t>1){
            for(int nr=pre[t-1][r][1],nl;nr>=l;nr=pre[t-1][nl][1]){
                nl=max(l-1,pre[t-1][nr][0]);
                int p=nl>=l?t-1:i;
                dp[p][nr]=max(dp[p][nr],res-(nr-nl)*h);
            }
        }
        if(b<n){
            for(int nr=pre[b+1][r][1],nl;nr>=l;nr=pre[b+1][nl][1]){
                nl=max(l-1,pre[b+1][nr][0]);
                int p=nl>=l?b+1:i;
                dp[p][nr]=max(dp[p][nr],res-(nr-nl)*h);
            }
        }
    }
    return ans;
}

Compilation message

soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:20:13: warning: unused variable 't' [-Wunused-variable]
   20 |         int t=0,b=n+1;
      |             ^
soccer.cpp:20:17: warning: unused variable 'b' [-Wunused-variable]
   20 |         int t=0,b=n+1;
      |                 ^

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 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 348 KB ok
3 Correct 0 ms 492 KB ok
4 Correct 1 ms 604 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 1 ms 344 KB ok
7 Correct 3 ms 2812 KB ok
8 Correct 24 ms 19804 KB ok
9 Correct 396 ms 158292 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 348 KB ok
3 Correct 1 ms 344 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 344 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 396 KB ok
11 Correct 0 ms 360 KB ok
12 Correct 0 ms 500 KB ok
13 Correct 0 ms 348 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 1 ms 344 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 344 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 1 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 0 ms 396 KB ok
12 Correct 0 ms 360 KB ok
13 Correct 0 ms 500 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 604 KB ok
16 Correct 1 ms 604 KB ok
17 Correct 0 ms 500 KB ok
18 Correct 1 ms 604 KB ok
19 Correct 0 ms 604 KB ok
20 Correct 0 ms 496 KB ok
21 Correct 0 ms 604 KB ok
22 Correct 0 ms 604 KB ok
23 Correct 1 ms 604 KB ok
24 Correct 0 ms 496 KB ok
25 Correct 0 ms 504 KB ok
26 Correct 1 ms 608 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 0 ms 492 KB ok
5 Correct 1 ms 604 KB ok
6 Correct 1 ms 344 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 344 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 1 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 396 KB ok
14 Correct 0 ms 360 KB ok
15 Correct 0 ms 500 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 604 KB ok
18 Correct 1 ms 604 KB ok
19 Correct 0 ms 500 KB ok
20 Correct 1 ms 604 KB ok
21 Correct 0 ms 604 KB ok
22 Correct 0 ms 496 KB ok
23 Correct 0 ms 604 KB ok
24 Correct 0 ms 604 KB ok
25 Correct 1 ms 604 KB ok
26 Correct 0 ms 496 KB ok
27 Correct 0 ms 504 KB ok
28 Correct 1 ms 608 KB ok
29 Correct 0 ms 608 KB ok
30 Correct 1 ms 1116 KB ok
31 Correct 1 ms 1116 KB ok
32 Correct 1 ms 1116 KB ok
33 Correct 1 ms 1004 KB ok
34 Correct 1 ms 860 KB ok
35 Correct 1 ms 860 KB ok
36 Correct 1 ms 860 KB ok
37 Correct 1 ms 860 KB ok
38 Correct 1 ms 864 KB ok
39 Correct 1 ms 1052 KB ok
40 Correct 1 ms 860 KB ok
41 Correct 1 ms 1016 KB ok

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 0 ms 492 KB ok
5 Correct 1 ms 604 KB ok
6 Correct 1 ms 344 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 344 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 1 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 396 KB ok
14 Correct 0 ms 360 KB ok
15 Correct 0 ms 500 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 604 KB ok
18 Correct 1 ms 604 KB ok
19 Correct 0 ms 500 KB ok
20 Correct 1 ms 604 KB ok
21 Correct 0 ms 604 KB ok
22 Correct 0 ms 496 KB ok
23 Correct 0 ms 604 KB ok
24 Correct 0 ms 604 KB ok
25 Correct 1 ms 604 KB ok
26 Correct 0 ms 496 KB ok
27 Correct 0 ms 504 KB ok
28 Correct 1 ms 608 KB ok
29 Correct 0 ms 608 KB ok
30 Correct 1 ms 1116 KB ok
31 Correct 1 ms 1116 KB ok
32 Correct 1 ms 1116 KB ok
33 Correct 1 ms 1004 KB ok
34 Correct 1 ms 860 KB ok
35 Correct 1 ms 860 KB ok
36 Correct 1 ms 860 KB ok
37 Correct 1 ms 860 KB ok
38 Correct 1 ms 864 KB ok
39 Correct 1 ms 1052 KB ok
40 Correct 1 ms 860 KB ok
41 Correct 1 ms 1016 KB ok
42 Correct 37 ms 20812 KB ok
43 Correct 32 ms 20756 KB ok
44 Correct 42 ms 21436 KB ok
45 Correct 41 ms 21268 KB ok
46 Correct 33 ms 21240 KB ok
47 Correct 32 ms 20400 KB ok
48 Correct 25 ms 18872 KB ok
49 Correct 23 ms 18864 KB ok
50 Correct 193 ms 18772 KB ok
51 Correct 27 ms 21200 KB ok
52 Correct 19 ms 17252 KB ok
53 Correct 19 ms 16472 KB ok
54 Correct 19 ms 17244 KB ok
55 Correct 20 ms 17864 KB ok
56 Correct 20 ms 18004 KB ok
57 Correct 35 ms 21076 KB ok
58 Correct 25 ms 21332 KB ok
59 Correct 30 ms 21328 KB ok

Subtask #6
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 604 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 348 KB ok
4 Correct 0 ms 492 KB ok
5 Correct 1 ms 604 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 1 ms 344 KB ok
8 Correct 3 ms 2812 KB ok
9 Correct 24 ms 19804 KB ok
10 Correct 396 ms 158292 KB ok
11 Correct 1 ms 344 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 344 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 1 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 396 KB ok
19 Correct 0 ms 360 KB ok
20 Correct 0 ms 500 KB ok
21 Correct 0 ms 348 KB ok
22 Correct 0 ms 604 KB ok
23 Correct 1 ms 604 KB ok
24 Correct 0 ms 500 KB ok
25 Correct 1 ms 604 KB ok
26 Correct 0 ms 604 KB ok
27 Correct 0 ms 496 KB ok
28 Correct 0 ms 604 KB ok
29 Correct 0 ms 604 KB ok
30 Correct 1 ms 604 KB ok
31 Correct 0 ms 496 KB ok
32 Correct 0 ms 504 KB ok
33 Correct 1 ms 608 KB ok
34 Correct 0 ms 608 KB ok
35 Correct 1 ms 1116 KB ok
36 Correct 1 ms 1116 KB ok
37 Correct 1 ms 1116 KB ok
38 Correct 1 ms 1004 KB ok
39 Correct 1 ms 860 KB ok
40 Correct 1 ms 860 KB ok
41 Correct 1 ms 860 KB ok
42 Correct 1 ms 860 KB ok
43 Correct 1 ms 864 KB ok
44 Correct 1 ms 1052 KB ok
45 Correct 1 ms 860 KB ok
46 Correct 1 ms 1016 KB ok
47 Correct 37 ms 20812 KB ok
48 Correct 32 ms 20756 KB ok
49 Correct 42 ms 21436 KB ok
50 Correct 41 ms 21268 KB ok
51 Correct 33 ms 21240 KB ok
52 Correct 32 ms 20400 KB ok
53 Correct 25 ms 18872 KB ok
54 Correct 23 ms 18864 KB ok
55 Correct 193 ms 18772 KB ok
56 Correct 27 ms 21200 KB ok
57 Correct 19 ms 17252 KB ok
58 Correct 19 ms 16472 KB ok
59 Correct 19 ms 17244 KB ok
60 Correct 20 ms 17864 KB ok
61 Correct 20 ms 18004 KB ok
62 Correct 35 ms 21076 KB ok
63 Correct 25 ms 21332 KB ok
64 Correct 30 ms 21328 KB ok
65 Correct 681 ms 166124 KB ok
66 Correct 350 ms 144304 KB ok
67 Correct 272 ms 136900 KB ok
68 Correct 605 ms 174280 KB ok
69 Correct 711 ms 168960 KB ok
70 Correct 884 ms 168872 KB ok
71 Correct 654 ms 173652 KB ok
72 Correct 497 ms 164948 KB ok
73 Correct 353 ms 149328 KB ok
74 Correct 368 ms 149824 KB ok
75 Correct 426 ms 149068 KB ok
76 Execution timed out 4550 ms 154032 KB Time limit exceeded
77 Halted 0 ms 0 KB -