답안 #556158

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
556158	2022-05-02T14:09:13 Z	ngpin04	Bomb (IZhO17_bomb)	C++14	90 / 100	341 ms	75004 KB

bomb

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define TASK ""
#define ALL(x) (x).begin(), (x).end() 
using namespace std;
template <typename T1, typename T2> bool mini(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maxi(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}
const int N = 2505;
const int oo = 1e9;
const long long ooo = 1e18;
const int mod = 1e9 + 7; // 998244353;
const long double pi = acos(-1);

int up[N][N];
int dn[N][N];
int a[N][N];
int mx[N];
int n,m;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	#ifdef ONLINE_JUDGE
	// freopen(TASK".inp","r",stdin);
	// freopen(TASK".out","w",stdout);
	#endif
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		string str; cin >> str;
		for (int j = 1; j <= m; j++)
			a[i][j] = str[j - 1] - '0';
	}	

	for (int j = 1; j <= m; j++) {
		for (int i = 1; i <= n; i++) 
			if (a[i][j])
				up[i][j] = up[i - 1][j] + 1;

		for (int i = n; i >= 1; i--)
			if (a[i][j])
				dn[i][j] = dn[i + 1][j] + 1;
	}

	for (int i = 1; i <= m; i++)
		mx[i] = oo;

	for (int i = 1; i <= n; i++) 
	for (int t = 0; t < 2; t++) {

		for (int j = 1; j <= m; j++) if (a[i][j]) {
			int k = j;
			while (a[i][k])
				k++;

			int f = oo, g = oo;
			for (int it = j; it < k; it++) {
				mini(f, up[i][it]);
				mini(g, dn[i][it]);

				// cerr << i << " " << j << " " << it << " " << f << " " << g << "\n";
				mini(mx[it - j + 1], f + g - 1);
			}

			mini(mx[k - j + 1], 0);
			j = k;
		}

		reverse(a[i] + 1, a[i] + m + 1);
		reverse(dn[i] + 1, dn[i] + m + 1);
		reverse(up[i] + 1, up[i] + m + 1);
	}
	
	int ans = 0;
	for (int i = 1; i <= m; i++) {
		if (mx[i] == 0)
			break;
		maxi(ans, i * mx[i]);
	}

	cout << ans;
	return 0;
}

Subtask #1

90.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	468 KB	Output is correct
3	Correct	14 ms	30444 KB	Output is correct
4	Correct	14 ms	30352 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Incorrect	1 ms	340 KB	Output isn't correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	584 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	468 KB	Output is correct
15	Correct	1 ms	468 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	1108 KB	Output is correct
18	Correct	1 ms	1236 KB	Output is correct
19	Correct	1 ms	1488 KB	Output is correct
20	Correct	1 ms	1488 KB	Output is correct
21	Correct	1 ms	976 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1620 KB	Output is correct
24	Correct	1 ms	1364 KB	Output is correct
25	Correct	1 ms	1620 KB	Output is correct
26	Incorrect	1 ms	1620 KB	Output isn't correct
27	Incorrect	3 ms	4820 KB	Output isn't correct
28	Correct	4 ms	5204 KB	Output is correct
29	Correct	5 ms	6612 KB	Output is correct
30	Correct	6 ms	7892 KB	Output is correct
31	Correct	5 ms	6228 KB	Output is correct
32	Correct	5 ms	7124 KB	Output is correct
33	Correct	7 ms	8304 KB	Output is correct
34	Correct	4 ms	5588 KB	Output is correct
35	Correct	7 ms	8300 KB	Output is correct
36	Incorrect	9 ms	8276 KB	Output isn't correct
37	Correct	1 ms	468 KB	Output is correct
38	Correct	308 ms	74936 KB	Output is correct
39	Correct	1 ms	468 KB	Output is correct
40	Correct	42 ms	20448 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	1 ms	1620 KB	Output is correct
43	Correct	272 ms	74992 KB	Output is correct
44	Correct	7 ms	8356 KB	Output is correct
45	Correct	254 ms	74828 KB	Output is correct
46	Correct	260 ms	74832 KB	Output is correct
47	Correct	265 ms	74904 KB	Output is correct
48	Correct	240 ms	74808 KB	Output is correct
49	Incorrect	309 ms	74796 KB	Output isn't correct
50	Correct	262 ms	74944 KB	Output is correct
51	Correct	240 ms	74880 KB	Output is correct
52	Correct	281 ms	74860 KB	Output is correct
53	Correct	253 ms	74904 KB	Output is correct
54	Correct	192 ms	74804 KB	Output is correct
55	Correct	206 ms	74916 KB	Output is correct
56	Correct	315 ms	74928 KB	Output is correct
57	Correct	228 ms	74872 KB	Output is correct
58	Correct	200 ms	74916 KB	Output is correct
59	Correct	204 ms	74888 KB	Output is correct
60	Incorrect	225 ms	74856 KB	Output isn't correct
61	Incorrect	341 ms	74808 KB	Output isn't correct
62	Incorrect	320 ms	74816 KB	Output isn't correct
63	Incorrect	319 ms	74816 KB	Output isn't correct
64	Incorrect	202 ms	74876 KB	Output isn't correct
65	Correct	222 ms	74848 KB	Output is correct
66	Correct	270 ms	74828 KB	Output is correct
67	Correct	253 ms	74892 KB	Output is correct
68	Correct	270 ms	75004 KB	Output is correct
69	Correct	196 ms	74756 KB	Output is correct
70	Correct	106 ms	59536 KB	Output is correct
71	Correct	173 ms	74756 KB	Output is correct
72	Correct	199 ms	74580 KB	Output is correct
73	Correct	203 ms	74572 KB	Output is correct
74	Correct	189 ms	74580 KB	Output is correct
75	Correct	203 ms	74584 KB	Output is correct
76	Correct	201 ms	74596 KB	Output is correct
77	Correct	227 ms	74684 KB	Output is correct
78	Correct	204 ms	74580 KB	Output is correct
79	Correct	145 ms	74588 KB	Output is correct
80	Correct	160 ms	74516 KB	Output is correct
81	Correct	152 ms	74316 KB	Output is correct
82	Correct	204 ms	74316 KB	Output is correct
83	Correct	201 ms	74444 KB	Output is correct
84	Correct	145 ms	74372 KB	Output is correct
85	Correct	266 ms	74344 KB	Output is correct
86	Correct	319 ms	74444 KB	Output is correct
87	Correct	199 ms	74444 KB	Output is correct
88	Correct	215 ms	74336 KB	Output is correct
89	Correct	248 ms	74304 KB	Output is correct
90	Correct	125 ms	59360 KB	Output is correct
91	Correct	231 ms	74164 KB	Output is correct
92	Correct	255 ms	74232 KB	Output is correct
93	Correct	319 ms	74088 KB	Output is correct
94	Correct	248 ms	74120 KB	Output is correct
95	Correct	216 ms	74128 KB	Output is correct
96	Correct	216 ms	74176 KB	Output is correct
97	Correct	316 ms	74048 KB	Output is correct
98	Correct	205 ms	74168 KB	Output is correct
99	Correct	260 ms	74144 KB	Output is correct
100	Correct	319 ms	74152 KB	Output is correct