oj.uz

Submission #1011012

# Submission time Handle Problem Language Result Execution time Memory
1011012 2024-06-29T16:58:58 Z LucaIlie Bomb (IZhO17_bomb) C++17
38 / 100
 1000 ms 80008 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 <= 50 && i <= m; i++ )
        withds.push_back( i );
    for ( int i = 100; i <= m - 50; i += 100 )
        withds.push_back( m );
    if ( m > 50 ) {
        for ( int i = m - 49; 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
38.0 / 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 11 ms 30440 KB Output is correct
4 Correct 11 ms 30556 KB Output is correct
5 Correct 7 ms 344 KB Output is correct
6 Correct 3 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 0 ms 600 KB Output is correct
13 Correct 0 ms 600 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 0 ms 700 KB Output is correct
17 Correct 8 ms 1304 KB Output is correct
18 Correct 6 ms 1372 KB Output is correct
19 Correct 9 ms 1624 KB Output is correct
20 Correct 10 ms 1628 KB Output is correct
21 Correct 6 ms 1116 KB Output is correct
22 Correct 9 ms 1280 KB Output is correct
23 Correct 12 ms 1628 KB Output is correct
24 Correct 8 ms 1512 KB Output is correct
25 Correct 13 ms 1800 KB Output is correct
26 Correct 14 ms 1800 KB Output is correct
27 Correct 120 ms 5004 KB Output is correct
28 Correct 124 ms 5208 KB Output is correct
29 Correct 186 ms 6492 KB Output is correct
30 Correct 208 ms 8028 KB Output is correct
31 Correct 155 ms 6232 KB Output is correct
32 Correct 186 ms 7256 KB Output is correct
33 Incorrect 239 ms 8448 KB Output isn't correct
34 Correct 108 ms 5720 KB Output is correct
35 Incorrect 222 ms 8280 KB Output isn't correct
36 Correct 252 ms 8444 KB Output is correct
37 Correct 1 ms 600 KB Output is correct
38 Execution timed out 1084 ms 79772 KB Time limit exceeded
39 Correct 1 ms 604 KB Output is correct
40 Incorrect 924 ms 20800 KB Output isn't correct
41 Correct 1 ms 600 KB Output is correct
42 Correct 14 ms 1792 KB Output is correct
43 Execution timed out 1079 ms 79956 KB Time limit exceeded
44 Incorrect 260 ms 8440 KB Output isn't correct
45 Execution timed out 1101 ms 80004 KB Time limit exceeded
46 Execution timed out 1061 ms 79808 KB Time limit exceeded
47 Execution timed out 1074 ms 79928 KB Time limit exceeded
48 Execution timed out 1043 ms 79860 KB Time limit exceeded
49 Execution timed out 1052 ms 79956 KB Time limit exceeded
50 Execution timed out 1028 ms 79948 KB Time limit exceeded
51 Execution timed out 1062 ms 79956 KB Time limit exceeded
52 Execution timed out 1094 ms 79960 KB Time limit exceeded
53 Execution timed out 1035 ms 79852 KB Time limit exceeded
54 Execution timed out 1028 ms 79980 KB Time limit exceeded
55 Execution timed out 1048 ms 79952 KB Time limit exceeded
56 Execution timed out 1085 ms 79952 KB Time limit exceeded
57 Execution timed out 1065 ms 79824 KB Time limit exceeded
58 Execution timed out 1065 ms 79956 KB Time limit exceeded
59 Execution timed out 1070 ms 79800 KB Time limit exceeded
60 Execution timed out 1018 ms 79956 KB Time limit exceeded
61 Execution timed out 1064 ms 79952 KB Time limit exceeded
62 Execution timed out 1070 ms 79956 KB Time limit exceeded
63 Execution timed out 1101 ms 79952 KB Time limit exceeded
64 Execution timed out 1033 ms 79952 KB Time limit exceeded
65 Execution timed out 1036 ms 79952 KB Time limit exceeded
66 Execution timed out 1064 ms 79956 KB Time limit exceeded
67 Execution timed out 1069 ms 79924 KB Time limit exceeded
68 Execution timed out 1018 ms 79800 KB Time limit exceeded
69 Execution timed out 1066 ms 79956 KB Time limit exceeded
70 Execution timed out 1032 ms 63048 KB Time limit exceeded
71 Execution timed out 1073 ms 79960 KB Time limit exceeded
72 Execution timed out 1040 ms 79956 KB Time limit exceeded
73 Execution timed out 1047 ms 79772 KB Time limit exceeded
74 Execution timed out 1039 ms 79952 KB Time limit exceeded
75 Execution timed out 1053 ms 79832 KB Time limit exceeded
76 Execution timed out 1059 ms 79844 KB Time limit exceeded
77 Execution timed out 1067 ms 79912 KB Time limit exceeded
78 Execution timed out 1067 ms 79964 KB Time limit exceeded
79 Execution timed out 1078 ms 79912 KB Time limit exceeded
80 Execution timed out 1075 ms 79876 KB Time limit exceeded
81 Execution timed out 1054 ms 79804 KB Time limit exceeded
82 Execution timed out 1066 ms 79956 KB Time limit exceeded
83 Execution timed out 1066 ms 79956 KB Time limit exceeded
84 Execution timed out 1031 ms 79952 KB Time limit exceeded
85 Execution timed out 1068 ms 79996 KB Time limit exceeded
86 Execution timed out 1059 ms 79952 KB Time limit exceeded
87 Execution timed out 1059 ms 79792 KB Time limit exceeded
88 Execution timed out 1049 ms 79888 KB Time limit exceeded
89 Execution timed out 1045 ms 79756 KB Time limit exceeded
90 Execution timed out 1040 ms 63052 KB Time limit exceeded
91 Execution timed out 1033 ms 79952 KB Time limit exceeded
92 Execution timed out 1047 ms 79952 KB Time limit exceeded
93 Execution timed out 1046 ms 79812 KB Time limit exceeded
94 Execution timed out 1034 ms 79956 KB Time limit exceeded
95 Execution timed out 1062 ms 79964 KB Time limit exceeded
96 Execution timed out 1034 ms 79956 KB Time limit exceeded
97 Execution timed out 1014 ms 79952 KB Time limit exceeded
98 Execution timed out 1030 ms 79840 KB Time limit exceeded
99 Execution timed out 1075 ms 79840 KB Time limit exceeded
100 Execution timed out 1037 ms 80008 KB Time limit exceeded