답안 #88101

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
88101	2018-12-03T19:48:39 Z	Pajaraja	Bomb (IZhO17_bomb)	C++17	19 / 100	1000 ms	68292 KB

bomb

#include <bits/stdc++.h>
#define MAXN 2507
using namespace std;
bool t[MAXN][MAXN],r[MAXN][MAXN];
int p[MAXN][MAXN],d[MAXN][MAXN],n,m;
char s[MAXN][MAXN];
bool provera(int x,int y)
{
	for(int i=x;i<=n;i++) for(int j=y;j<=m;j++) r[i][j]=(p[i][j]-p[i-x][j]-p[i][j-y]+p[i-x][j-y]==x*y);
	for(int i=n;i>0;i--) for(int j=m;j>0;j--) d[i][j]=r[i][j]+d[i+1][j]+d[i][j+1]-d[i+1][j+1];
	for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) if(t[i][j] && d[i][j]-d[min(n,i+x)][j]-d[i][min(m,j+y)]+d[min(n,i+x)][min(m,j+y)]==0) return false;
	return true;
}
int main()
{
	int lh=2507,lv=2507;
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++)
	{
		scanf("%s",s[i]);
		for(int j=1;j<=m;j++) t[i][j]=(s[i][j-1]=='1'?1:0);
	}
	for(int i=1;i<=n;i++)
	{
		int cur=0;
		for(int j=1;j<=m;j++)
		{
			if(t[i][j]==0) {if(cur!=0) lh=min(lh,cur); cur=0;}
			else cur++;
		}
		if(cur!=0) lh=min(lh,cur);
	}
	for(int i=1;i<=m;i++)
	{
		int cur=0;
		for(int j=1;j<=n;j++)
		{
			if(t[j][i]==0) {if(cur!=0) lv=min(lv,cur); cur=0;}
			else cur++;
		}
		if(cur!=0) lv=min(lv,cur);
	}
	int sol=0;
	for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) p[i][j]=t[i][j]+p[i-1][j]+p[i][j-1]-p[i-1][j-1];
	for(int i=1;i<=lv;i++)
	{
		while(!provera(i,lh)) lh--; 
		sol=max(sol,lh*i);
	}
	printf("%d",sol);
}

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~
bomb.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",s[i]);
   ~~~~~^~~~~~~~~~~

Subtask #1

19.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Execution timed out	1066 ms	508 KB	Time limit exceeded
2	Execution timed out	1068 ms	864 KB	Time limit exceeded
3	Execution timed out	1080 ms	38824 KB	Time limit exceeded
4	Execution timed out	1060 ms	38960 KB	Time limit exceeded
5	Execution timed out	1073 ms	38960 KB	Time limit exceeded
6	Execution timed out	1077 ms	38960 KB	Time limit exceeded
7	Execution timed out	1076 ms	38960 KB	Time limit exceeded
8	Correct	2 ms	38960 KB	Output is correct
9	Correct	2 ms	38960 KB	Output is correct
10	Execution timed out	1082 ms	38960 KB	Time limit exceeded
11	Correct	2 ms	38960 KB	Output is correct
12	Execution timed out	1072 ms	38960 KB	Time limit exceeded
13	Execution timed out	1074 ms	38960 KB	Time limit exceeded
14	Execution timed out	1073 ms	38960 KB	Time limit exceeded
15	Correct	2 ms	38960 KB	Output is correct
16	Execution timed out	1073 ms	38960 KB	Time limit exceeded
17	Incorrect	3 ms	38960 KB	Output isn't correct
18	Correct	3 ms	38960 KB	Output is correct
19	Correct	5 ms	38960 KB	Output is correct
20	Correct	5 ms	38960 KB	Output is correct
21	Correct	3 ms	38960 KB	Output is correct
22	Correct	4 ms	38960 KB	Output is correct
23	Correct	6 ms	38960 KB	Output is correct
24	Correct	5 ms	38960 KB	Output is correct
25	Correct	8 ms	38960 KB	Output is correct
26	Execution timed out	1074 ms	38960 KB	Time limit exceeded
27	Execution timed out	1069 ms	38960 KB	Time limit exceeded
28	Correct	16 ms	38960 KB	Output is correct
29	Execution timed out	1067 ms	38960 KB	Time limit exceeded
30	Correct	267 ms	38960 KB	Output is correct
31	Correct	171 ms	38960 KB	Output is correct
32	Correct	160 ms	38960 KB	Output is correct
33	Correct	344 ms	38960 KB	Output is correct
34	Correct	17 ms	38960 KB	Output is correct
35	Correct	187 ms	38960 KB	Output is correct
36	Execution timed out	1074 ms	38960 KB	Time limit exceeded
37	Execution timed out	1070 ms	38960 KB	Time limit exceeded
38	Execution timed out	1080 ms	68164 KB	Time limit exceeded
39	Execution timed out	1075 ms	68164 KB	Time limit exceeded
40	Execution timed out	1087 ms	68164 KB	Time limit exceeded
41	Execution timed out	1080 ms	68164 KB	Time limit exceeded
42	Execution timed out	1072 ms	68164 KB	Time limit exceeded
43	Execution timed out	1090 ms	68164 KB	Time limit exceeded
44	Execution timed out	1079 ms	68164 KB	Time limit exceeded
45	Execution timed out	1050 ms	68164 KB	Time limit exceeded
46	Execution timed out	1066 ms	68240 KB	Time limit exceeded
47	Execution timed out	1074 ms	68240 KB	Time limit exceeded
48	Execution timed out	1046 ms	68240 KB	Time limit exceeded
49	Execution timed out	1051 ms	68240 KB	Time limit exceeded
50	Execution timed out	1058 ms	68240 KB	Time limit exceeded
51	Execution timed out	1055 ms	68240 KB	Time limit exceeded
52	Execution timed out	1067 ms	68240 KB	Time limit exceeded
53	Execution timed out	1090 ms	68240 KB	Time limit exceeded
54	Execution timed out	1055 ms	68240 KB	Time limit exceeded
55	Execution timed out	1066 ms	68240 KB	Time limit exceeded
56	Execution timed out	1069 ms	68240 KB	Time limit exceeded
57	Execution timed out	1084 ms	68240 KB	Time limit exceeded
58	Execution timed out	1078 ms	68240 KB	Time limit exceeded
59	Execution timed out	1065 ms	68240 KB	Time limit exceeded
60	Execution timed out	1086 ms	68240 KB	Time limit exceeded
61	Execution timed out	1058 ms	68240 KB	Time limit exceeded
62	Execution timed out	1066 ms	68240 KB	Time limit exceeded
63	Execution timed out	1064 ms	68240 KB	Time limit exceeded
64	Execution timed out	1072 ms	68240 KB	Time limit exceeded
65	Execution timed out	1073 ms	68240 KB	Time limit exceeded
66	Execution timed out	1056 ms	68240 KB	Time limit exceeded
67	Execution timed out	1066 ms	68240 KB	Time limit exceeded
68	Execution timed out	1060 ms	68240 KB	Time limit exceeded
69	Execution timed out	1063 ms	68240 KB	Time limit exceeded
70	Execution timed out	1063 ms	68240 KB	Time limit exceeded
71	Execution timed out	1073 ms	68240 KB	Time limit exceeded
72	Execution timed out	1090 ms	68240 KB	Time limit exceeded
73	Execution timed out	1075 ms	68240 KB	Time limit exceeded
74	Execution timed out	1087 ms	68240 KB	Time limit exceeded
75	Execution timed out	1055 ms	68240 KB	Time limit exceeded
76	Execution timed out	1075 ms	68240 KB	Time limit exceeded
77	Execution timed out	1083 ms	68292 KB	Time limit exceeded
78	Execution timed out	1079 ms	68292 KB	Time limit exceeded
79	Execution timed out	1091 ms	68292 KB	Time limit exceeded
80	Execution timed out	1090 ms	68292 KB	Time limit exceeded
81	Execution timed out	1088 ms	68292 KB	Time limit exceeded
82	Execution timed out	1084 ms	68292 KB	Time limit exceeded
83	Execution timed out	1081 ms	68292 KB	Time limit exceeded
84	Execution timed out	1090 ms	68292 KB	Time limit exceeded
85	Execution timed out	1081 ms	68292 KB	Time limit exceeded
86	Execution timed out	1089 ms	68292 KB	Time limit exceeded
87	Execution timed out	1089 ms	68292 KB	Time limit exceeded
88	Execution timed out	1049 ms	68292 KB	Time limit exceeded
89	Execution timed out	1072 ms	68292 KB	Time limit exceeded
90	Execution timed out	1085 ms	68292 KB	Time limit exceeded
91	Execution timed out	1091 ms	68292 KB	Time limit exceeded
92	Execution timed out	1092 ms	68292 KB	Time limit exceeded
93	Execution timed out	1076 ms	68292 KB	Time limit exceeded
94	Execution timed out	1079 ms	68292 KB	Time limit exceeded
95	Execution timed out	1089 ms	68292 KB	Time limit exceeded
96	Execution timed out	1093 ms	68292 KB	Time limit exceeded
97	Execution timed out	1089 ms	68292 KB	Time limit exceeded
98	Execution timed out	1087 ms	68292 KB	Time limit exceeded
99	Execution timed out	1090 ms	68292 KB	Time limit exceeded
100	Execution timed out	1082 ms	68292 KB	Time limit exceeded