답안 #556162

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
556162	2022-05-02T14:18:13 Z	ngpin04	Bomb (IZhO17_bomb)	C++14	90 / 100	497 ms	74528 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 <= n; i++)
			if (a[i][j])
				mini(mx[1], up[i][j] + dn[i][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	328 KB	Output is correct
2	Correct	1 ms	468 KB	Output is correct
3	Correct	12 ms	30420 KB	Output is correct
4	Correct	12 ms	30420 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	588 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	1492 KB	Output is correct
20	Correct	1 ms	1492 KB	Output is correct
21	Correct	2 ms	1108 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	2 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	2 ms	1616 KB	Output isn't correct
27	Incorrect	4 ms	4820 KB	Output isn't correct
28	Correct	4 ms	5248 KB	Output is correct
29	Correct	6 ms	6612 KB	Output is correct
30	Correct	6 ms	7936 KB	Output is correct
31	Correct	5 ms	6228 KB	Output is correct
32	Correct	5 ms	7124 KB	Output is correct
33	Correct	6 ms	8276 KB	Output is correct
34	Correct	4 ms	5588 KB	Output is correct
35	Correct	6 ms	8276 KB	Output is correct
36	Incorrect	10 ms	8404 KB	Output isn't correct
37	Correct	1 ms	468 KB	Output is correct
38	Correct	442 ms	74380 KB	Output is correct
39	Correct	1 ms	468 KB	Output is correct
40	Correct	54 ms	20296 KB	Output is correct
41	Correct	1 ms	592 KB	Output is correct
42	Correct	1 ms	1620 KB	Output is correct
43	Correct	353 ms	74468 KB	Output is correct
44	Correct	7 ms	8276 KB	Output is correct
45	Correct	358 ms	74284 KB	Output is correct
46	Correct	333 ms	74416 KB	Output is correct
47	Correct	358 ms	74444 KB	Output is correct
48	Correct	343 ms	74380 KB	Output is correct
49	Incorrect	476 ms	74304 KB	Output isn't correct
50	Correct	346 ms	74400 KB	Output is correct
51	Correct	347 ms	74324 KB	Output is correct
52	Correct	343 ms	74316 KB	Output is correct
53	Correct	350 ms	74380 KB	Output is correct
54	Correct	278 ms	74376 KB	Output is correct
55	Correct	269 ms	74392 KB	Output is correct
56	Correct	469 ms	74316 KB	Output is correct
57	Correct	257 ms	74344 KB	Output is correct
58	Correct	263 ms	74412 KB	Output is correct
59	Correct	257 ms	74316 KB	Output is correct
60	Incorrect	331 ms	74456 KB	Output isn't correct
61	Incorrect	485 ms	74396 KB	Output isn't correct
62	Incorrect	497 ms	74312 KB	Output isn't correct
63	Incorrect	492 ms	74316 KB	Output isn't correct
64	Incorrect	274 ms	74376 KB	Output isn't correct
65	Correct	337 ms	74316 KB	Output is correct
66	Correct	356 ms	74308 KB	Output is correct
67	Correct	373 ms	74332 KB	Output is correct
68	Correct	378 ms	74528 KB	Output is correct
69	Correct	263 ms	74316 KB	Output is correct
70	Correct	141 ms	59528 KB	Output is correct
71	Correct	232 ms	74440 KB	Output is correct
72	Correct	253 ms	74304 KB	Output is correct
73	Correct	279 ms	74388 KB	Output is correct
74	Correct	260 ms	74356 KB	Output is correct
75	Correct	275 ms	74392 KB	Output is correct
76	Correct	289 ms	74392 KB	Output is correct
77	Correct	287 ms	74376 KB	Output is correct
78	Correct	271 ms	74312 KB	Output is correct
79	Correct	194 ms	74476 KB	Output is correct
80	Correct	185 ms	74360 KB	Output is correct
81	Correct	196 ms	74360 KB	Output is correct
82	Correct	280 ms	74408 KB	Output is correct
83	Correct	279 ms	74368 KB	Output is correct
84	Correct	183 ms	74444 KB	Output is correct
85	Correct	266 ms	74336 KB	Output is correct
86	Correct	465 ms	74348 KB	Output is correct
87	Correct	262 ms	74444 KB	Output is correct
88	Correct	282 ms	74400 KB	Output is correct
89	Correct	336 ms	74308 KB	Output is correct
90	Correct	183 ms	59556 KB	Output is correct
91	Correct	300 ms	74296 KB	Output is correct
92	Correct	328 ms	74392 KB	Output is correct
93	Correct	469 ms	74404 KB	Output is correct
94	Correct	344 ms	74404 KB	Output is correct
95	Correct	288 ms	74316 KB	Output is correct
96	Correct	298 ms	74304 KB	Output is correct
97	Correct	473 ms	74364 KB	Output is correct
98	Correct	288 ms	74316 KB	Output is correct
99	Correct	321 ms	74416 KB	Output is correct
100	Correct	456 ms	74404 KB	Output is correct