답안 #43151 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
43151	2018-03-09T15:02:01 Z	cheater2k	Bomb (IZhO17_bomb)	C++14	100 / 100	822 ms	131072 KB

bomb

/*
5 5 
00111
00111
11111
11110
11100
*/
#include <bits/stdc++.h>
using namespace std;

#define left __left
#define right __right

const int N = 2505;

int n, m, nrow, ncol;
int left[N][N];
int right[N][N];
int up[N][N];
int down[N][N];
char a[N][N];
int c[N];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n >> m;
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m; ++j) {
			cin >> a[i][j];
		}
	}

	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m; ++j) left[i][j] = a[i][j] == '1' ? left[i][j - 1] + 1 : 0;
		for (int j = m; j >= 1; --j) right[i][j] = a[i][j] == '1' ? right[i][j + 1] + 1 : 0;
	}

	for (int j = 1; j <= m; ++j) {
		for (int i = 1; i <= n; ++i) up[i][j] = a[i][j] == '1' ? up[i - 1][j] + 1 : 0;
		for (int i = n; i >= 1; --i) down[i][j] = a[i][j] == '1' ? down[i + 1][j] + 1 : 0;
	}

	nrow = n, ncol = m;
	for (int i = 1; i <= n; ++i) {
		for (int j = 1; j <= m; ++j) if (a[i][j] == '1') {
			nrow = min(nrow, up[i][j] + down[i][j] - 1);
			ncol = min(ncol, left[i][j] + right[i][j] - 1);
		}
	}

	int res = 0;
	for (int r = 1; r <= nrow; ++r) c[r] = ncol;

	for (int i = 1; i <= n; ++i) for (int j = 1; j <= m; ++j) {
		if (a[i][j] != '1') continue;

		int minleft = ncol;
		int minright = ncol;
		if (down[i][j] == 1) {
			for (int k = i; k >= i - nrow + 1; --k) {
				minleft = min(minleft, left[k][j]);
				minright = min(minright, right[k][j]);
				c[i - k + 1] = min(c[i - k + 1], minleft + minright - 1);
			}
		}

		minleft = minright = ncol;
		if (up[i][j] == 1) {
			for (int k = i; k <= i + nrow - 1; ++k) {
				minleft = min(minleft, left[k][j]);
				minright = min(minright, right[k][j]);
				c[k - i + 1] = min(c[k - i + 1], minleft + minright - 1);
			}
		}
	}

	for (int r = 1; r <= nrow; ++r) res = max(res, r * c[r]);
	cout << res << endl;
}

Subtask #1
100.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	376 KB	Output is correct
2	Correct	2 ms	740 KB	Output is correct
3	Correct	36 ms	46640 KB	Output is correct
4	Correct	36 ms	46668 KB	Output is correct
5	Correct	2 ms	46668 KB	Output is correct
6	Correct	2 ms	46668 KB	Output is correct
7	Correct	2 ms	46668 KB	Output is correct
8	Correct	2 ms	46668 KB	Output is correct
9	Correct	2 ms	46668 KB	Output is correct
10	Correct	1 ms	46668 KB	Output is correct
11	Correct	2 ms	46668 KB	Output is correct
12	Correct	2 ms	46668 KB	Output is correct
13	Correct	2 ms	46668 KB	Output is correct
14	Correct	2 ms	46668 KB	Output is correct
15	Correct	2 ms	46668 KB	Output is correct
16	Correct	2 ms	46668 KB	Output is correct
17	Correct	2 ms	46668 KB	Output is correct
18	Correct	2 ms	46668 KB	Output is correct
19	Correct	4 ms	46668 KB	Output is correct
20	Correct	3 ms	46668 KB	Output is correct
21	Correct	2 ms	46668 KB	Output is correct
22	Correct	3 ms	46668 KB	Output is correct
23	Correct	3 ms	46668 KB	Output is correct
24	Correct	3 ms	46668 KB	Output is correct
25	Correct	3 ms	46668 KB	Output is correct
26	Correct	3 ms	46668 KB	Output is correct
27	Correct	12 ms	46668 KB	Output is correct
28	Correct	9 ms	46668 KB	Output is correct
29	Correct	11 ms	46668 KB	Output is correct
30	Correct	19 ms	46668 KB	Output is correct
31	Correct	15 ms	46668 KB	Output is correct
32	Correct	13 ms	46668 KB	Output is correct
33	Correct	16 ms	46668 KB	Output is correct
34	Correct	8 ms	46668 KB	Output is correct
35	Correct	13 ms	46668 KB	Output is correct
36	Correct	17 ms	46668 KB	Output is correct
37	Correct	2 ms	46668 KB	Output is correct
38	Correct	776 ms	112820 KB	Output is correct
39	Correct	2 ms	112820 KB	Output is correct
40	Correct	68 ms	112820 KB	Output is correct
41	Correct	2 ms	112820 KB	Output is correct
42	Correct	3 ms	112820 KB	Output is correct
43	Correct	486 ms	119708 KB	Output is correct
44	Correct	16 ms	119708 KB	Output is correct
45	Correct	580 ms	125800 KB	Output is correct
46	Correct	516 ms	131072 KB	Output is correct
47	Correct	590 ms	131072 KB	Output is correct
48	Correct	452 ms	131072 KB	Output is correct
49	Correct	466 ms	131072 KB	Output is correct
50	Correct	442 ms	131072 KB	Output is correct
51	Correct	437 ms	131072 KB	Output is correct
52	Correct	482 ms	131072 KB	Output is correct
53	Correct	447 ms	131072 KB	Output is correct
54	Correct	448 ms	131072 KB	Output is correct
55	Correct	436 ms	131072 KB	Output is correct
56	Correct	822 ms	131072 KB	Output is correct
57	Correct	446 ms	131072 KB	Output is correct
58	Correct	433 ms	131072 KB	Output is correct
59	Correct	452 ms	131072 KB	Output is correct
60	Correct	439 ms	131072 KB	Output is correct
61	Correct	465 ms	131072 KB	Output is correct
62	Correct	546 ms	131072 KB	Output is correct
63	Correct	608 ms	131072 KB	Output is correct
64	Correct	446 ms	131072 KB	Output is correct
65	Correct	437 ms	131072 KB	Output is correct
66	Correct	432 ms	131072 KB	Output is correct
67	Correct	443 ms	131072 KB	Output is correct
68	Correct	454 ms	131072 KB	Output is correct
69	Correct	428 ms	131072 KB	Output is correct
70	Correct	294 ms	131072 KB	Output is correct
71	Correct	455 ms	131072 KB	Output is correct
72	Correct	507 ms	131072 KB	Output is correct
73	Correct	537 ms	131072 KB	Output is correct
74	Correct	484 ms	131072 KB	Output is correct
75	Correct	483 ms	131072 KB	Output is correct
76	Correct	500 ms	131072 KB	Output is correct
77	Correct	503 ms	131072 KB	Output is correct
78	Correct	500 ms	131072 KB	Output is correct
79	Correct	427 ms	131072 KB	Output is correct
80	Correct	416 ms	131072 KB	Output is correct
81	Correct	417 ms	131072 KB	Output is correct
82	Correct	504 ms	131072 KB	Output is correct
83	Correct	530 ms	131072 KB	Output is correct
84	Correct	411 ms	131072 KB	Output is correct
85	Correct	478 ms	131072 KB	Output is correct
86	Correct	460 ms	131072 KB	Output is correct
87	Correct	460 ms	131072 KB	Output is correct
88	Correct	506 ms	131072 KB	Output is correct
89	Correct	456 ms	131072 KB	Output is correct
90	Correct	293 ms	131072 KB	Output is correct
91	Correct	451 ms	131072 KB	Output is correct
92	Correct	454 ms	131072 KB	Output is correct
93	Correct	452 ms	131072 KB	Output is correct
94	Correct	474 ms	131072 KB	Output is correct
95	Correct	497 ms	131072 KB	Output is correct
96	Correct	495 ms	131072 KB	Output is correct
97	Correct	487 ms	131072 KB	Output is correct
98	Correct	488 ms	131072 KB	Output is correct
99	Correct	469 ms	131072 KB	Output is correct
100	Correct	453 ms	131072 KB	Output is correct

답안 #43151

Compilation message

Subtask #1 100.0 / 100.0

Subtask #1
100.0 / 100.0