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Submission #38388

# Submission time Handle Problem Language Result Execution time Memory
38388 2018-01-04T04:52:58 Z Talant Bomb (IZhO17_bomb) C++14
13 / 100
 1000 ms 56992 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;

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;
                                        }
                                }
                        }
                }
        }
        int f = 0;
        for (int i = 1; i <= n; i ++) {
                for (int j = 1; j <= n; j ++) {
                        if (t[i][j] == 1)
                                f = 1;
                        if (t[i][j] == -1)
                                t[i][j] = 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 (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 (check(i,j))
                                mx = max(mx,i * j);
                }
        }
        cout << mn * mn1 << endl;
}

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:51:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf ("%s", a[i] + 1);
                                       ^

Subtask #1
13.0 / 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 289 ms 56992 KB Output is correct
4 Correct 423 ms 56992 KB Output is correct
5 Correct 0 ms 56992 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 13 ms 56992 KB Output isn't correct
20 Incorrect 16 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 76 ms 56992 KB Output isn't correct
24 Incorrect 13 ms 56992 KB Output isn't correct
25 Incorrect 236 ms 56992 KB Output isn't correct
26 Correct 93 ms 56992 KB Output is correct
27 Correct 6 ms 56992 KB Output is correct
28 Incorrect 23 ms 56992 KB Output isn't correct
29 Execution timed out 1000 ms 56992 KB Execution timed out
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34 Incorrect 43 ms 56992 KB Output isn't correct
35 Execution timed out 1000 ms 56992 KB Execution timed out
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37 Incorrect 0 ms 56992 KB Output isn't correct
38 Execution timed out 1000 ms 56992 KB Execution timed out
39 Incorrect 0 ms 56992 KB Output isn't correct
40 Execution timed out 1000 ms 56992 KB Execution timed out
41 Incorrect 0 ms 56992 KB Output isn't correct
42 Execution timed out 1000 ms 56992 KB Execution timed out
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