답안 #171027

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
171027	2019-12-27T05:40:09 Z	super_j6	Bomb (IZhO17_bomb)	C++14	43 / 100	1000 ms	50296 KB

bomb

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string.h>
using namespace std;
#define endl '\n'
#define pi pair<int, int>

const int maxn = 2502;
int n, m;
int a[maxn][maxn];

bool solve(int x, int y){
	int b[maxn][maxn];
	memset(b, 0, sizeof(b));
	for(int i = x; i <= n; i++){
		for(int j = y; j <= m; j++){
			if(a[i][j] - a[i - x][j] - a[i][j - y] + a[i - x][j - y] == x * y){
				b[i - x + 1][j - y + 1]++;
				b[i - x + 1][j + 1]--;
				b[i + 1][j - y + 1]--;
				b[i + 1][j + 1]++;
			}
		}
	}
	
	int amt = a[n][m];
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			b[i][j] += b[i - 1][j] + b[i][j - 1] - b[i - 1][j - 1];
			amt -= (b[i][j] > 0);
		}
	}
	return amt == 0;
}

int solveh(int x){
	int l = 0, r = n + 1;
	while(r - l > 1){
		int mid = (l + r) / 2;
		if(solve(mid, x)) l = mid;
		else r = mid;
	}
	return l;
}

int solvew(int x){
	int l = 0, r = m + 1;
	while(r - l > 1){
		int mid = (l + r) / 2;
		if(solve(x, mid)) l = mid;
		else r = mid;
	}
	return l;
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	
	cin >> n >> m;
	
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			char c;
			cin >> c;
			a[i][j] = c - '0' + a[i - 1][j] + a[i][j - 1] - a[i - 1][j - 1];
		}
	}
	
	int ret = 0;
	for(int i = 1; i <= n && solve(i, 1); i++){
		int x = solvew(i);
		i = solveh(x);
		ret = max(ret, x * i);
	}
	
	cout << ret << endl;

	return 0;
}

Subtask #1

43.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	44 ms	24824 KB	Output is correct
2	Correct	34 ms	24952 KB	Output is correct
3	Correct	70 ms	34808 KB	Output is correct
4	Correct	69 ms	34936 KB	Output is correct
5	Correct	55 ms	24952 KB	Output is correct
6	Correct	47 ms	24828 KB	Output is correct
7	Correct	42 ms	24824 KB	Output is correct
8	Correct	112 ms	24956 KB	Output is correct
9	Correct	125 ms	24956 KB	Output is correct
10	Correct	153 ms	24824 KB	Output is correct
11	Correct	107 ms	24952 KB	Output is correct
12	Correct	87 ms	25080 KB	Output is correct
13	Correct	42 ms	24924 KB	Output is correct
14	Correct	48 ms	24824 KB	Output is correct
15	Correct	91 ms	24956 KB	Output is correct
16	Correct	48 ms	24952 KB	Output is correct
17	Correct	58 ms	25080 KB	Output is correct
18	Correct	162 ms	25208 KB	Output is correct
19	Correct	117 ms	25336 KB	Output is correct
20	Correct	137 ms	25296 KB	Output is correct
21	Correct	128 ms	25080 KB	Output is correct
22	Correct	257 ms	25312 KB	Output is correct
23	Correct	113 ms	25336 KB	Output is correct
24	Correct	108 ms	25272 KB	Output is correct
25	Correct	136 ms	25208 KB	Output is correct
26	Correct	63 ms	25336 KB	Output is correct
27	Correct	94 ms	26360 KB	Output is correct
28	Correct	489 ms	26600 KB	Output is correct
29	Execution timed out	1054 ms	27056 KB	Time limit exceeded
30	Correct	272 ms	27512 KB	Output is correct
31	Correct	292 ms	27000 KB	Output is correct
32	Correct	254 ms	27256 KB	Output is correct
33	Correct	283 ms	27676 KB	Output is correct
34	Correct	613 ms	26616 KB	Output is correct
35	Correct	294 ms	27708 KB	Output is correct
36	Correct	121 ms	27640 KB	Output is correct
37	Correct	107 ms	24952 KB	Output is correct
38	Correct	834 ms	50096 KB	Output is correct
39	Correct	98 ms	24952 KB	Output is correct
40	Correct	507 ms	31992 KB	Output is correct
41	Correct	120 ms	24952 KB	Output is correct
42	Execution timed out	1059 ms	25340 KB	Time limit exceeded
43	Execution timed out	1086 ms	50012 KB	Time limit exceeded
44	Execution timed out	1072 ms	27640 KB	Time limit exceeded
45	Execution timed out	1081 ms	50140 KB	Time limit exceeded
46	Correct	974 ms	50168 KB	Output is correct
47	Execution timed out	1081 ms	50040 KB	Time limit exceeded
48	Execution timed out	1070 ms	49976 KB	Time limit exceeded
49	Execution timed out	1082 ms	50040 KB	Time limit exceeded
50	Execution timed out	1064 ms	50080 KB	Time limit exceeded
51	Execution timed out	1069 ms	50168 KB	Time limit exceeded
52	Execution timed out	1074 ms	50040 KB	Time limit exceeded
53	Execution timed out	1068 ms	50296 KB	Time limit exceeded
54	Execution timed out	1071 ms	50040 KB	Time limit exceeded
55	Execution timed out	1077 ms	50172 KB	Time limit exceeded
56	Correct	904 ms	50040 KB	Output is correct
57	Execution timed out	1084 ms	50040 KB	Time limit exceeded
58	Execution timed out	1070 ms	50168 KB	Time limit exceeded
59	Execution timed out	1076 ms	50040 KB	Time limit exceeded
60	Execution timed out	1036 ms	50168 KB	Time limit exceeded
61	Execution timed out	1069 ms	50060 KB	Time limit exceeded
62	Execution timed out	1084 ms	50044 KB	Time limit exceeded
63	Execution timed out	1028 ms	50040 KB	Time limit exceeded
64	Correct	999 ms	50176 KB	Output is correct
65	Execution timed out	1083 ms	50040 KB	Time limit exceeded
66	Execution timed out	1073 ms	50040 KB	Time limit exceeded
67	Execution timed out	1077 ms	50040 KB	Time limit exceeded
68	Execution timed out	1074 ms	50044 KB	Time limit exceeded
69	Execution timed out	1071 ms	50020 KB	Time limit exceeded
70	Execution timed out	1079 ms	45176 KB	Time limit exceeded
71	Execution timed out	1075 ms	50208 KB	Time limit exceeded
72	Execution timed out	1082 ms	50012 KB	Time limit exceeded
73	Execution timed out	1073 ms	50132 KB	Time limit exceeded
74	Execution timed out	1063 ms	50040 KB	Time limit exceeded
75	Execution timed out	1068 ms	50116 KB	Time limit exceeded
76	Execution timed out	1074 ms	50040 KB	Time limit exceeded
77	Execution timed out	1084 ms	50036 KB	Time limit exceeded
78	Execution timed out	1073 ms	50040 KB	Time limit exceeded
79	Execution timed out	1083 ms	49672 KB	Time limit exceeded
80	Execution timed out	1089 ms	49656 KB	Time limit exceeded
81	Execution timed out	1087 ms	49616 KB	Time limit exceeded
82	Execution timed out	1076 ms	49656 KB	Time limit exceeded
83	Execution timed out	1063 ms	49656 KB	Time limit exceeded
84	Execution timed out	1091 ms	49656 KB	Time limit exceeded
85	Execution timed out	1073 ms	49576 KB	Time limit exceeded
86	Execution timed out	1079 ms	49772 KB	Time limit exceeded
87	Execution timed out	1076 ms	49656 KB	Time limit exceeded
88	Execution timed out	1069 ms	49720 KB	Time limit exceeded
89	Execution timed out	1078 ms	49656 KB	Time limit exceeded
90	Execution timed out	1074 ms	44792 KB	Time limit exceeded
91	Execution timed out	1079 ms	49664 KB	Time limit exceeded
92	Execution timed out	1057 ms	49784 KB	Time limit exceeded
93	Execution timed out	1075 ms	49656 KB	Time limit exceeded
94	Execution timed out	1084 ms	49656 KB	Time limit exceeded
95	Execution timed out	1085 ms	49784 KB	Time limit exceeded
96	Execution timed out	1083 ms	49656 KB	Time limit exceeded
97	Execution timed out	1073 ms	49656 KB	Time limit exceeded
98	Execution timed out	1087 ms	49660 KB	Time limit exceeded
99	Execution timed out	1073 ms	49676 KB	Time limit exceeded
100	Execution timed out	1070 ms	49684 KB	Time limit exceeded