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Submission #1011016

# Submission time Handle Problem Language Result Execution time Memory
1011016 2024-06-29T17:00:16 Z LucaIlie Bomb (IZhO17_bomb) C++17
35 / 100
 1000 ms 79508 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX_N = 2500;
int mat[MAX_N + 2][MAX_N + 2], up[MAX_N + 2][MAX_N + 2], down[MAX_N + 2][MAX_N + 2], hup[MAX_N + 2], hdown[MAX_N + 2], maxHeight[MAX_N + 2];

int main() {
    int n, m;

    cin >> n >> m;
    for ( int l = 1; l <= n; l++ ) {
        for ( int c = 1; c <= m; c++ ) {
            char ch;
            cin >> ch;
            mat[l][c] = ch - '0';
        }
    }

    for ( int l = 1; l <= n; l++ ) {
        for ( int c = 1; c <= m; c++ )
            up[l][c] = (mat[l][c] ? up[l - 1][c] + 1 : 0);
    }
    for ( int l = n; l >= 1; l-- ) {
        for ( int c = 1; c <= m; c++ )
            down[l][c] = (mat[l][c] ? down[l + 1][c] + 1 : 0);
    }

    vector<int> withds;
    for ( int i = 1; i <= 30 && i <= m; i++ )
        withds.push_back( i );
    for ( int i = 100; i <= m - 50; i += 300 )
        withds.push_back( m );
    if ( m > 30 ) {
        for ( int i = m - 29; i <= m; i++ )
            withds.push_back( i );
    }

    int maxArea = 0;
    for ( int w: withds ) {
        int h = n;
        for ( int l = 0; l <= n; l++ ) {
            //printf( "LINE %d:\n", l );
            deque<int> dq;
            for ( int c = 1; c <= m; c++ ) {
                if ( !dq.empty() && dq.front() <= c - w )
                    dq.pop_front();
                while ( !dq.empty() && up[l][c] <= up[l][dq.back()] )
                    dq.pop_back();
                dq.push_back( c );
                hup[c] = up[l][dq.front()];
            }
            while ( !dq.empty() )
                dq.pop_back();

            for ( int c = 1; c <= m; c++ ) {
                if ( !dq.empty() && dq.front() <= c - w )
                    dq.pop_front();
                while ( !dq.empty() && down[l + 1][c] <= down[l + 1][dq.back()] )
                    dq.pop_back();
                dq.push_back( c );
                hdown[c] = down[l + 1][dq.front()];
            }
            while ( !dq.empty() )
                dq.pop_back();

            /*for ( int c = 1; c <= m; c++ )
                printf( "%d ", hup[c] );
            printf( "\n" );
            for ( int c = 1; c <= m; c++ )
                printf( "%d ", hdown[c] );
            printf( "\n" );*/

            for ( int c = 1; c <= m; c++ ) {
                if ( hup[c] == 0 )
                    hdown[c] = 0;
            }
            for ( int c = m; c >= 1; c-- ) {
                if ( !dq.empty() && dq.front() >= c + w )
                    dq.pop_front();
                if ( c >= w ) {
                    while ( !dq.empty() && hdown[c] + hup[c] >= hdown[dq.back()] + hup[dq.back()] )
                        dq.pop_back();
                    dq.push_back( c );
                }
                if ( !dq.empty() )
                    maxHeight[c] = hdown[dq.front()] + hup[dq.front()];
                else
                    maxHeight[c] = 0;
            }

            for ( int c = 1; c <= m; c++ ) {
                if ( mat[l][c] )
                    h = min( h, maxHeight[c] );
                //printf( "%d ", mat[l][c] ? maxHeight[c] : 9 );
            }
            //printf( "\n" );
        }

        //printf( "\n\n\n\nBA AVEM W SI H!!!!!!!!!!! %d %d\n\n\n", w, h );

        maxArea = max( maxArea, w * h );
    }

    cout << maxArea;

    return 0;
}

Subtask #1
35.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 10 ms 30552 KB Output is correct
4 Correct 10 ms 30552 KB Output is correct
5 Correct 4 ms 348 KB Output is correct
6 Incorrect 2 ms 496 KB Output isn't correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 0 ms 604 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 5 ms 1116 KB Output is correct
18 Correct 4 ms 1372 KB Output is correct
19 Correct 8 ms 1628 KB Output is correct
20 Correct 6 ms 1628 KB Output is correct
21 Correct 4 ms 1116 KB Output is correct
22 Correct 6 ms 1372 KB Output is correct
23 Correct 8 ms 1624 KB Output is correct
24 Correct 5 ms 1468 KB Output is correct
25 Correct 8 ms 1624 KB Output is correct
26 Correct 9 ms 1796 KB Output is correct
27 Correct 70 ms 4952 KB Output is correct
28 Correct 86 ms 5348 KB Output is correct
29 Incorrect 96 ms 6744 KB Output isn't correct
30 Correct 124 ms 8028 KB Output is correct
31 Correct 106 ms 6372 KB Output is correct
32 Correct 114 ms 7328 KB Output is correct
33 Incorrect 145 ms 8284 KB Output isn't correct
34 Correct 58 ms 5768 KB Output is correct
35 Incorrect 140 ms 8444 KB Output isn't correct
36 Correct 163 ms 8284 KB Output is correct
37 Correct 1 ms 604 KB Output is correct
38 Execution timed out 1092 ms 78944 KB Time limit exceeded
39 Correct 1 ms 616 KB Output is correct
40 Incorrect 608 ms 20992 KB Output isn't correct
41 Correct 1 ms 600 KB Output is correct
42 Incorrect 8 ms 1728 KB Output isn't correct
43 Execution timed out 1084 ms 78648 KB Time limit exceeded
44 Incorrect 148 ms 8284 KB Output isn't correct
45 Execution timed out 1067 ms 78676 KB Time limit exceeded
46 Execution timed out 1063 ms 78676 KB Time limit exceeded
47 Execution timed out 1047 ms 78548 KB Time limit exceeded
48 Execution timed out 1036 ms 78760 KB Time limit exceeded
49 Execution timed out 1060 ms 78676 KB Time limit exceeded
50 Execution timed out 1039 ms 78588 KB Time limit exceeded
51 Execution timed out 1064 ms 78628 KB Time limit exceeded
52 Execution timed out 1061 ms 78672 KB Time limit exceeded
53 Execution timed out 1064 ms 78676 KB Time limit exceeded
54 Execution timed out 1062 ms 78676 KB Time limit exceeded
55 Execution timed out 1039 ms 78528 KB Time limit exceeded
56 Execution timed out 1072 ms 78676 KB Time limit exceeded
57 Execution timed out 1066 ms 79444 KB Time limit exceeded
58 Execution timed out 1080 ms 79508 KB Time limit exceeded
59 Execution timed out 1042 ms 79440 KB Time limit exceeded
60 Execution timed out 1022 ms 78548 KB Time limit exceeded
61 Execution timed out 1029 ms 78672 KB Time limit exceeded
62 Execution timed out 1016 ms 78700 KB Time limit exceeded
63 Execution timed out 1043 ms 78700 KB Time limit exceeded
64 Execution timed out 1060 ms 78676 KB Time limit exceeded
65 Execution timed out 1030 ms 79440 KB Time limit exceeded
66 Execution timed out 1067 ms 79448 KB Time limit exceeded
67 Execution timed out 1046 ms 79496 KB Time limit exceeded
68 Execution timed out 1057 ms 79400 KB Time limit exceeded
69 Execution timed out 1056 ms 78708 KB Time limit exceeded
70 Execution timed out 1052 ms 62544 KB Time limit exceeded
71 Execution timed out 1061 ms 78592 KB Time limit exceeded
72 Execution timed out 1028 ms 78696 KB Time limit exceeded
73 Execution timed out 1006 ms 78676 KB Time limit exceeded
74 Execution timed out 1062 ms 78556 KB Time limit exceeded
75 Execution timed out 1016 ms 78540 KB Time limit exceeded
76 Execution timed out 1052 ms 78752 KB Time limit exceeded
77 Execution timed out 1095 ms 78728 KB Time limit exceeded
78 Execution timed out 1073 ms 78676 KB Time limit exceeded
79 Execution timed out 1048 ms 78680 KB Time limit exceeded
80 Execution timed out 1065 ms 78672 KB Time limit exceeded
81 Execution timed out 1056 ms 78616 KB Time limit exceeded
82 Execution timed out 1093 ms 78540 KB Time limit exceeded
83 Execution timed out 1041 ms 78676 KB Time limit exceeded
84 Execution timed out 1040 ms 78732 KB Time limit exceeded
85 Execution timed out 1027 ms 78672 KB Time limit exceeded
86 Execution timed out 1048 ms 78672 KB Time limit exceeded
87 Execution timed out 1037 ms 78616 KB Time limit exceeded
88 Execution timed out 1098 ms 78676 KB Time limit exceeded
89 Execution timed out 1082 ms 78672 KB Time limit exceeded
90 Execution timed out 1057 ms 64048 KB Time limit exceeded
91 Execution timed out 1022 ms 78672 KB Time limit exceeded
92 Execution timed out 1038 ms 78572 KB Time limit exceeded
93 Execution timed out 1104 ms 78528 KB Time limit exceeded
94 Execution timed out 1035 ms 78676 KB Time limit exceeded
95 Execution timed out 1052 ms 78560 KB Time limit exceeded
96 Execution timed out 1091 ms 78672 KB Time limit exceeded
97 Execution timed out 1049 ms 78672 KB Time limit exceeded
98 Execution timed out 1063 ms 78596 KB Time limit exceeded
99 Execution timed out 1028 ms 78672 KB Time limit exceeded
100 Execution timed out 1078 ms 78676 KB Time limit exceeded