답안 #556160

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
556160	2022-05-02T14:11:19 Z	ngpin04	Bomb (IZhO17_bomb)	C++14	90 / 100	274 ms	74444 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 (i > 1)
			mini(mx[i], mx[i - 1]);
		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	11 ms	30420 KB	Output is correct
4	Correct	12 ms	30420 KB	Output is correct
5	Correct	1 ms	336 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	468 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	456 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	1492 KB	Output is correct
20	Correct	1 ms	1492 KB	Output is correct
21	Correct	1 ms	980 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	1624 KB	Output is correct
26	Incorrect	1 ms	1620 KB	Output isn't correct
27	Incorrect	4 ms	4820 KB	Output isn't correct
28	Correct	3 ms	5204 KB	Output is correct
29	Correct	5 ms	6612 KB	Output is correct
30	Correct	6 ms	7876 KB	Output is correct
31	Correct	4 ms	6156 KB	Output is correct
32	Correct	5 ms	7128 KB	Output is correct
33	Correct	6 ms	8276 KB	Output is correct
34	Correct	4 ms	5580 KB	Output is correct
35	Correct	6 ms	8276 KB	Output is correct
36	Incorrect	7 ms	8276 KB	Output isn't correct
37	Correct	1 ms	468 KB	Output is correct
38	Correct	242 ms	74328 KB	Output is correct
39	Correct	1 ms	468 KB	Output is correct
40	Correct	36 ms	20088 KB	Output is correct
41	Correct	1 ms	468 KB	Output is correct
42	Correct	2 ms	1616 KB	Output is correct
43	Correct	217 ms	74152 KB	Output is correct
44	Correct	6 ms	8276 KB	Output is correct
45	Correct	216 ms	74184 KB	Output is correct
46	Correct	216 ms	74316 KB	Output is correct
47	Correct	218 ms	74284 KB	Output is correct
48	Correct	213 ms	74332 KB	Output is correct
49	Incorrect	273 ms	74272 KB	Output isn't correct
50	Correct	215 ms	74248 KB	Output is correct
51	Correct	216 ms	74272 KB	Output is correct
52	Correct	209 ms	74188 KB	Output is correct
53	Correct	214 ms	74180 KB	Output is correct
54	Correct	167 ms	74236 KB	Output is correct
55	Correct	170 ms	74316 KB	Output is correct
56	Correct	274 ms	74188 KB	Output is correct
57	Correct	176 ms	74220 KB	Output is correct
58	Correct	167 ms	74244 KB	Output is correct
59	Correct	167 ms	74304 KB	Output is correct
60	Incorrect	195 ms	74172 KB	Output isn't correct
61	Incorrect	265 ms	74224 KB	Output isn't correct
62	Incorrect	261 ms	74276 KB	Output isn't correct
63	Incorrect	263 ms	74188 KB	Output isn't correct
64	Incorrect	173 ms	74268 KB	Output isn't correct
65	Correct	195 ms	74224 KB	Output is correct
66	Correct	213 ms	74168 KB	Output is correct
67	Correct	226 ms	74312 KB	Output is correct
68	Correct	223 ms	74280 KB	Output is correct
69	Correct	174 ms	74180 KB	Output is correct
70	Correct	102 ms	59432 KB	Output is correct
71	Correct	154 ms	74336 KB	Output is correct
72	Correct	169 ms	74188 KB	Output is correct
73	Correct	171 ms	74264 KB	Output is correct
74	Correct	185 ms	74176 KB	Output is correct
75	Correct	174 ms	74220 KB	Output is correct
76	Correct	173 ms	74188 KB	Output is correct
77	Correct	174 ms	74160 KB	Output is correct
78	Correct	188 ms	74212 KB	Output is correct
79	Correct	130 ms	74172 KB	Output is correct
80	Correct	131 ms	74196 KB	Output is correct
81	Correct	138 ms	74236 KB	Output is correct
82	Correct	172 ms	74216 KB	Output is correct
83	Correct	173 ms	74272 KB	Output is correct
84	Correct	126 ms	74244 KB	Output is correct
85	Correct	165 ms	74204 KB	Output is correct
86	Correct	237 ms	74188 KB	Output is correct
87	Correct	162 ms	74176 KB	Output is correct
88	Correct	175 ms	74172 KB	Output is correct
89	Correct	188 ms	74276 KB	Output is correct
90	Correct	110 ms	59384 KB	Output is correct
91	Correct	188 ms	74272 KB	Output is correct
92	Correct	192 ms	74248 KB	Output is correct
93	Correct	247 ms	74212 KB	Output is correct
94	Correct	193 ms	74228 KB	Output is correct
95	Correct	193 ms	74196 KB	Output is correct
96	Correct	177 ms	74312 KB	Output is correct
97	Correct	254 ms	74160 KB	Output is correct
98	Correct	184 ms	74272 KB	Output is correct
99	Correct	188 ms	74444 KB	Output is correct
100	Correct	244 ms	74348 KB	Output is correct