Submission #91541

# Submission time Handle Problem Language Result Execution time Memory
91541 2018-12-28T08:32:58 Z davitmarg Bomb (IZhO17_bomb) C++17
16 / 100
577 ms 114144 KB
/*
DEATH-MATCH
Davit-Marg
*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <cassert>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <iterator>
#include <ctype.h>
#include <stdlib.h>  
#include <fstream>  
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
using namespace std;

int n, m,w,h,l,r,mid;
int mp[2503][2503],pr[2503][2503];
char tmp;

int sum(int ys,int xs,int y,int x)
{
	xs--;
	ys--;
	return pr[y][x] - pr[y][xs] - pr[ys][x] + pr[ys][xs];
}

bool check(int x)
{
	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= m; j++)
			if (mp[i][j] && !mp[i - 1][j] && !mp[i][j - 1])
			{
				int s = sum(i, j, i + x - 1, j + w - 1);
				if (s != x * w)
					return 0;
			}

	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= m; j++)
			if (mp[i][j] && !mp[i + 1][j] && !mp[i][j + 1])
			{
				int s = sum(i-x+1,j-w+1,i, j);
				if (s != x * w)
					return 0;
			}
	return 1;
}

int main()
{
	cin >> n >> m;
	w = m;
	h = n;
	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= m; j++)
		{
			cin >> tmp;
			mp[i][j] = tmp - '0';
			pr[i][j] = pr[i - 1][j] + pr[i][j - 1] - pr[i - 1][j - 1]+mp[i][j];
		}
	for (int i = 1; i <= n; i++)
	{
		int sum = 0;
		for (int j = 1; j <= m; j++)
		{
			sum += mp[i][j];
			if (mp[i][j] == 0)
			{
				if (sum)
					w = min(sum,w);
				sum = 0;
			}
		}
		if(sum)
			w = min(sum, w);
	}

	r = n;
	l = 1;
	while (l <= r)
	{
		mid = (l + r) / 2;
		if (check(mid))
		{
			h = mid;
			l = mid + 1;
		}
		else
			r = mid - 1;
	}

	cout << max(w * h,1) << endl;
	return 0;
}


/*



5 6
000000
111110
111111
111111
000000


7 8
01001110
01001110
01001100
00000000
01000000
01000000
01000000



7 8
01000000
00000000
00000000
00000000
00000000
00000000
00000000

7 8
11111111
11111111
11111111
11100111
11111111
11111111
11111111

7 8
00000000
00011000
00011000
00000000
00011111
00011111
00000000

*/
# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 18 ms 20512 KB Output is correct
4 Correct 18 ms 20528 KB Output is correct
5 Correct 2 ms 20528 KB Output is correct
6 Correct 2 ms 20528 KB Output is correct
7 Incorrect 2 ms 20528 KB Output isn't correct
8 Incorrect 2 ms 20528 KB Output isn't correct
9 Incorrect 2 ms 20528 KB Output isn't correct
10 Incorrect 2 ms 20528 KB Output isn't correct
11 Incorrect 2 ms 20528 KB Output isn't correct
12 Incorrect 2 ms 20528 KB Output isn't correct
13 Correct 2 ms 20528 KB Output is correct
14 Correct 2 ms 20528 KB Output is correct
15 Incorrect 2 ms 20528 KB Output isn't correct
16 Correct 2 ms 20528 KB Output is correct
17 Correct 2 ms 20528 KB Output is correct
18 Incorrect 2 ms 20528 KB Output isn't correct
19 Incorrect 3 ms 20528 KB Output isn't correct
20 Incorrect 3 ms 20528 KB Output isn't correct
21 Incorrect 2 ms 20528 KB Output isn't correct
22 Incorrect 3 ms 20528 KB Output isn't correct
23 Incorrect 3 ms 20528 KB Output isn't correct
24 Incorrect 3 ms 20528 KB Output isn't correct
25 Incorrect 3 ms 20528 KB Output isn't correct
26 Incorrect 3 ms 20528 KB Output isn't correct
27 Runtime error 16 ms 20528 KB Execution killed with signal 11 (could be triggered by violating memory limits)
28 Incorrect 10 ms 20528 KB Output isn't correct
29 Incorrect 13 ms 20528 KB Output isn't correct
30 Incorrect 18 ms 20528 KB Output isn't correct
31 Incorrect 21 ms 20528 KB Output isn't correct
32 Incorrect 15 ms 20528 KB Output isn't correct
33 Incorrect 17 ms 20528 KB Output isn't correct
34 Incorrect 9 ms 20528 KB Output isn't correct
35 Incorrect 18 ms 20528 KB Output isn't correct
36 Incorrect 20 ms 20528 KB Output isn't correct
37 Correct 2 ms 20528 KB Output is correct
38 Correct 477 ms 56936 KB Output is correct
39 Correct 2 ms 56936 KB Output is correct
40 Incorrect 60 ms 56936 KB Output isn't correct
41 Incorrect 2 ms 56936 KB Output isn't correct
42 Incorrect 3 ms 56936 KB Output isn't correct
43 Correct 480 ms 61364 KB Output is correct
44 Incorrect 19 ms 61364 KB Output isn't correct
45 Incorrect 428 ms 67704 KB Output isn't correct
46 Correct 439 ms 73780 KB Output is correct
47 Incorrect 411 ms 79916 KB Output isn't correct
48 Incorrect 381 ms 83444 KB Output isn't correct
49 Incorrect 511 ms 83476 KB Output isn't correct
50 Incorrect 375 ms 83476 KB Output isn't correct
51 Incorrect 368 ms 83476 KB Output isn't correct
52 Incorrect 394 ms 83476 KB Output isn't correct
53 Incorrect 390 ms 83476 KB Output isn't correct
54 Incorrect 402 ms 83476 KB Output isn't correct
55 Incorrect 391 ms 83476 KB Output isn't correct
56 Correct 577 ms 83476 KB Output is correct
57 Incorrect 438 ms 83476 KB Output isn't correct
58 Incorrect 417 ms 83476 KB Output isn't correct
59 Incorrect 409 ms 84540 KB Output isn't correct
60 Incorrect 515 ms 85804 KB Output isn't correct
61 Incorrect 530 ms 89000 KB Output isn't correct
62 Incorrect 479 ms 92208 KB Output isn't correct
63 Incorrect 477 ms 92208 KB Output isn't correct
64 Incorrect 491 ms 92208 KB Output isn't correct
65 Incorrect 373 ms 92208 KB Output isn't correct
66 Incorrect 381 ms 92208 KB Output isn't correct
67 Incorrect 381 ms 92208 KB Output isn't correct
68 Incorrect 378 ms 92208 KB Output isn't correct
69 Incorrect 425 ms 92208 KB Output isn't correct
70 Incorrect 278 ms 92208 KB Output isn't correct
71 Incorrect 466 ms 92208 KB Output isn't correct
72 Incorrect 436 ms 92208 KB Output isn't correct
73 Incorrect 451 ms 92208 KB Output isn't correct
74 Incorrect 414 ms 92208 KB Output isn't correct
75 Incorrect 411 ms 92208 KB Output isn't correct
76 Incorrect 413 ms 92208 KB Output isn't correct
77 Incorrect 402 ms 92208 KB Output isn't correct
78 Incorrect 455 ms 92208 KB Output isn't correct
79 Incorrect 402 ms 92324 KB Output isn't correct
80 Incorrect 435 ms 94532 KB Output isn't correct
81 Incorrect 440 ms 98556 KB Output isn't correct
82 Incorrect 429 ms 104732 KB Output isn't correct
83 Incorrect 430 ms 109988 KB Output isn't correct
84 Incorrect 386 ms 109988 KB Output isn't correct
85 Incorrect 441 ms 109988 KB Output isn't correct
86 Incorrect 414 ms 109988 KB Output isn't correct
87 Incorrect 446 ms 110064 KB Output isn't correct
88 Incorrect 426 ms 110104 KB Output isn't correct
89 Incorrect 463 ms 110104 KB Output isn't correct
90 Incorrect 294 ms 110104 KB Output isn't correct
91 Incorrect 456 ms 110164 KB Output isn't correct
92 Incorrect 399 ms 110164 KB Output isn't correct
93 Incorrect 410 ms 111600 KB Output isn't correct
94 Incorrect 419 ms 114144 KB Output isn't correct
95 Incorrect 426 ms 114144 KB Output isn't correct
96 Incorrect 428 ms 114144 KB Output isn't correct
97 Incorrect 464 ms 114144 KB Output isn't correct
98 Incorrect 424 ms 114144 KB Output isn't correct
99 Incorrect 436 ms 114144 KB Output isn't correct
100 Incorrect 408 ms 114144 KB Output isn't correct