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
#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;
}
# 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