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답안 #38387

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
38387 2018-01-04T04:48:51 Z Talant Bomb (IZhO17_bomb) C++14
32 / 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 << mx << 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
32.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 56992 KB Output is correct
2 Correct 0 ms 56992 KB Output is correct
3 Correct 283 ms 56992 KB Output is correct
4 Correct 393 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 Correct 0 ms 56992 KB Output is correct
9 Correct 0 ms 56992 KB Output is correct
10 Correct 0 ms 56992 KB Output is correct
11 Correct 0 ms 56992 KB Output is correct
12 Correct 0 ms 56992 KB Output is correct
13 Correct 0 ms 56992 KB Output is correct
14 Correct 0 ms 56992 KB Output is correct
15 Correct 0 ms 56992 KB Output is correct
16 Correct 0 ms 56992 KB Output is correct
17 Correct 0 ms 56992 KB Output is correct
18 Correct 0 ms 56992 KB Output is correct
19 Correct 13 ms 56992 KB Output is correct
20 Correct 13 ms 56992 KB Output is correct
21 Correct 0 ms 56992 KB Output is correct
22 Correct 0 ms 56992 KB Output is correct
23 Correct 83 ms 56992 KB Output is correct
24 Correct 13 ms 56992 KB Output is correct
25 Correct 253 ms 56992 KB Output is correct
26 Correct 69 ms 56992 KB Output is correct
27 Correct 3 ms 56992 KB Output is correct
28 Correct 26 ms 56992 KB Output is correct
29 Execution timed out 1000 ms 56992 KB Execution timed out
30 Execution timed out 1000 ms 56992 KB Execution timed out
31 Execution timed out 1000 ms 56992 KB Execution timed out
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34 Correct 36 ms 56992 KB Output is correct
35 Execution timed out 1000 ms 56992 KB Execution timed out
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37 Correct 0 ms 56992 KB Output is correct
38 Execution timed out 1000 ms 56992 KB Execution timed out
39 Correct 0 ms 56992 KB Output is correct
40 Execution timed out 1000 ms 56992 KB Execution timed out
41 Correct 0 ms 56992 KB Output is correct
42 Execution timed out 1000 ms 56992 KB Execution timed out
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