oj.uz

Submission #38398

# Submission time Handle Problem Language Result Execution time Memory
38398 2018-01-04T05:07:39 Z Talant Bomb (IZhO17_bomb) C++14
14 / 100
 1000 ms 131072 KB 
#include <bits/stdc++.h>

#define fr first
#define sc second
#define OK puts("OK");
#define pb push_back
#define mk make_pair

using namespace std;

typedef long long ll;

const int inf = (int)1e9 + 7;
const int N = (int)1e6 + 10;

int n,m;
char a[2501][2501];
int t[2501][2501];
int c[2501][2501];
int mx,mn = inf,mn1 = inf;
vector <pair<int,int> > v;

bool check (int h,int w) {
        for (int i = h; i <= n; i ++) {
                for (int j = w; j <= m; j ++) {
                        if (c[i][j] - c[i - h][j] - c[i][j - w] + c[i - h][j - w] == (h * w)) {
                                for (int l = i - h + 1; l <= i; l ++) {
                                        for (int r = j - w + 1; r <= j; r ++) {
                                                t[l][r] = -1;
                                        }
                                }
                                j += w;
                        }
                }
        }
        int f = 0;

        for (int i = 0; i < v.size(); i ++) {
                if (t[v[i].fr][v[i].sc] == 1)
                        f - 1;
                t[v[i].fr][v[i].sc] = 1;
        }

        if (f)
                return false;
        return true;
}
int main () {
        cin >> n >> m;

        for (int i = 1; i <= n; i ++)
                scanf ("%s", a[i] + 1);

        for (int i = 1; i <= n; i ++) {
                int cnt = 0;
                for (int j = 1; j <= m; j ++) {
                        t[i][j] = int(a[i][j] - '0');
                        c[i][j] = t[i][j];
                        if (t[i][j] == 1)
                                v.pb(mk(i,j));
                        if (c[i][j] == 1)
                                cnt ++;
                        else {
                                if (cnt > 0)
                                mn = min(mn,cnt);
                        cnt = 0;
                        }
                }
                if (cnt > 0)
                        mn = min(mn,cnt);
        }
        for (int i = 1; i <= m; i ++) {
                int cnt = 0;
                for (int j = 1; j <= n; j ++) {
                        if (c[j][i] == 1)
                                cnt ++;
                        else {
                                if (cnt > 0)
                                mn1 = min(mn1,cnt);
                        cnt = 0;
                        }
                }
                if (cnt > 0)
                        mn1 = min(mn1,cnt);
        }
        if (mn == inf)
                mn = 0;
        if (mn1 == inf)
                mn1 = 0;

        for (int i = 1; i <= n; i ++)
                for (int j = 2; j <= m; j ++)
                        c[i][j] += c[i][j - 1];

        for (int i = 2; i <= n; i ++)
                for (int j = 1; j <= m; j ++)
                        c[i][j] += c[i - 1][j];

        for (int i = 1; i <= mn1; i ++) {
                for (int j = 1; j <= mn; j ++) {
                         if (mx >= i * j)
                                continue;
                         if (check(i,j))
                                mx = max(mx,i * j);
                }
        }
        cout << mx << endl;
}

Compilation message

bomb.cpp: In function 'bool check(int, int)':
bomb.cpp:38:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i = 0; i < v.size(); i ++) {
                           ^
bomb.cpp:40:27: warning: statement has no effect [-Wunused-value]
                         f - 1;
                           ^
bomb.cpp: In function 'int main()':
bomb.cpp:52:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%s", a[i] + 1);
                                       ^

Subtask #1
14.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 56992 KB Output is correct
2 Correct 0 ms 56992 KB Output is correct
3 Correct 23 ms 57132 KB Output is correct
4 Correct 23 ms 57132 KB Output is correct
5 Correct 0 ms 57132 KB Output is correct
6 Correct 0 ms 56992 KB Output is correct
7 Correct 0 ms 56992 KB Output is correct
8 Incorrect 0 ms 56992 KB Output isn't correct
9 Incorrect 0 ms 56992 KB Output isn't correct
10 Incorrect 0 ms 56992 KB Output isn't correct
11 Incorrect 0 ms 56992 KB Output isn't correct
12 Incorrect 0 ms 56992 KB Output isn't correct
13 Correct 0 ms 56992 KB Output is correct
14 Correct 0 ms 56992 KB Output is correct
15 Incorrect 0 ms 56992 KB Output isn't correct
16 Correct 0 ms 56992 KB Output is correct
17 Correct 0 ms 56992 KB Output is correct
18 Incorrect 0 ms 56992 KB Output isn't correct
19 Incorrect 0 ms 56992 KB Output isn't correct
20 Incorrect 0 ms 56992 KB Output isn't correct
21 Incorrect 0 ms 56992 KB Output isn't correct
22 Incorrect 0 ms 56992 KB Output isn't correct
23 Incorrect 3 ms 57132 KB Output isn't correct
24 Incorrect 0 ms 56992 KB Output isn't correct
25 Incorrect 3 ms 57132 KB Output isn't correct
26 Correct 3 ms 57264 KB Output is correct
27 Correct 0 ms 58612 KB Output is correct
28 Incorrect 6 ms 56992 KB Output isn't correct
29 Incorrect 883 ms 58612 KB Output isn't correct
30 Incorrect 626 ms 57844 KB Output isn't correct
31 Incorrect 316 ms 57460 KB Output isn't correct
32 Incorrect 236 ms 57460 KB Output isn't correct
33 Execution timed out 1000 ms 57844 KB Execution timed out
34 Incorrect 6 ms 56992 KB Output isn't correct
35 Incorrect 236 ms 57264 KB Output isn't correct
36 Correct 616 ms 60148 KB Output is correct
37 Incorrect 0 ms 56992 KB Output isn't correct
38 Memory limit exceeded 86 ms 131072 KB Memory limit exceeded
39 Incorrect 0 ms 56992 KB Output isn't correct
40 Execution timed out 1000 ms 69364 KB Execution timed out
41 Incorrect 0 ms 56992 KB Output isn't correct
42 Incorrect 13 ms 57132 KB Output isn't correct
43 Memory limit exceeded 99 ms 131072 KB Memory limit exceeded
44 Execution timed out 1000 ms 58612 KB Execution timed out
45 Execution timed out 1000 ms 106228 KB Execution timed out
46 Execution timed out 1000 ms 106228 KB Execution timed out
47 Execution timed out 1000 ms 106228 KB Execution timed out
48 Execution timed out 1000 ms 106228 KB Execution timed out
49 Memory limit exceeded 109 ms 131072 KB Memory limit exceeded
50 Execution timed out 1000 ms 106228 KB Execution timed out
51 Execution timed out 1000 ms 106228 KB Execution timed out
52 Execution timed out 1000 ms 106228 KB Execution timed out
53 Execution timed out 1000 ms 106228 KB Execution timed out
54 Execution timed out 1000 ms 81652 KB Execution timed out
55 Execution timed out 1000 ms 81652 KB Execution timed out
56 Memory limit exceeded 96 ms 131072 KB Memory limit exceeded
57 Execution timed out 1000 ms 81652 KB Execution timed out
58 Execution timed out 1000 ms 81652 KB Execution timed out
59 Execution timed out 1000 ms 81652 KB Execution timed out
60 Execution timed out 1000 ms 106228 KB Execution timed out
61 Memory limit exceeded 99 ms 131072 KB Memory limit exceeded
62 Memory limit exceeded 73 ms 131072 KB Memory limit exceeded
63 Memory limit exceeded 93 ms 131072 KB Memory limit exceeded
64 Execution timed out 1000 ms 81652 KB Execution timed out
65 Execution timed out 1000 ms 106228 KB Execution timed out
66 Execution timed out 1000 ms 106228 KB Execution timed out
67 Execution timed out 1000 ms 106228 KB Execution timed out
68 Memory limit exceeded 89 ms 131072 KB Memory limit exceeded
69 Execution timed out 1000 ms 81652 KB Execution timed out
70 Execution timed out 1000 ms 63220 KB Execution timed out
71 Execution timed out 1000 ms 69364 KB Execution timed out
72 Execution timed out 1000 ms 81652 KB Execution timed out
73 Execution timed out 1000 ms 81652 KB Execution timed out
74 Execution timed out 1000 ms 81652 KB Execution timed out
75 Execution timed out 1000 ms 81652 KB Execution timed out
76 Execution timed out 1000 ms 81652 KB Execution timed out
77 Execution timed out 1000 ms 81652 KB Execution timed out
78 Execution timed out 1000 ms 81652 KB Execution timed out
79 Execution timed out 1000 ms 57460 KB Execution timed out
80 Execution timed out 1000 ms 57460 KB Execution timed out
81 Execution timed out 1000 ms 60148 KB Execution timed out
82 Execution timed out 1000 ms 81652 KB Execution timed out
83 Execution timed out 1000 ms 81652 KB Execution timed out
84 Execution timed out 1000 ms 57264 KB Execution timed out
85 Execution timed out 1000 ms 81652 KB Execution timed out
86 Memory limit exceeded 123 ms 131072 KB Memory limit exceeded
87 Execution timed out 1000 ms 81652 KB Execution timed out
88 Execution timed out 1000 ms 81652 KB Execution timed out
89 Execution timed out 1000 ms 106228 KB Execution timed out
90 Execution timed out 1000 ms 69364 KB Execution timed out
91 Execution timed out 1000 ms 106228 KB Execution timed out
92 Execution timed out 1000 ms 106228 KB Execution timed out
93 Memory limit exceeded 63 ms 131072 KB Memory limit exceeded
94 Execution timed out 1000 ms 106228 KB Execution timed out
95 Execution timed out 1000 ms 81652 KB Execution timed out
96 Execution timed out 1000 ms 81652 KB Execution timed out
97 Memory limit exceeded 83 ms 131072 KB Memory limit exceeded
98 Execution timed out 1000 ms 81652 KB Execution timed out
99 Execution timed out 1000 ms 106228 KB Execution timed out
100 Memory limit exceeded 73 ms 131072 KB Memory limit exceeded