답안 #88108 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
88108	2018-12-03T20:15:45 Z	Pajaraja	Bomb (IZhO17_bomb)	C++17	43 / 100	1000 ms	68376 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+1,i+x)][j]-d[i][min(m+1,j+y)]+d[min(n+1,i+x)][min(m+1,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--; 
		if(sol>lh*n) break;
		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
43.0 / 100.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	21 ms	764 KB	Output is correct
3	Correct	51 ms	38956 KB	Output is correct
4	Correct	54 ms	38956 KB	Output is correct
5	Correct	2 ms	38956 KB	Output is correct
6	Correct	2 ms	38956 KB	Output is correct
7	Correct	2 ms	38956 KB	Output is correct
8	Correct	3 ms	38956 KB	Output is correct
9	Correct	2 ms	38956 KB	Output is correct
10	Correct	2 ms	38956 KB	Output is correct
11	Correct	3 ms	38956 KB	Output is correct
12	Correct	2 ms	38956 KB	Output is correct
13	Correct	2 ms	38956 KB	Output is correct
14	Correct	3 ms	38956 KB	Output is correct
15	Correct	3 ms	38956 KB	Output is correct
16	Correct	3 ms	38956 KB	Output is correct
17	Correct	4 ms	38956 KB	Output is correct
18	Correct	4 ms	38956 KB	Output is correct
19	Correct	5 ms	38956 KB	Output is correct
20	Correct	5 ms	38956 KB	Output is correct
21	Correct	3 ms	38956 KB	Output is correct
22	Correct	4 ms	38956 KB	Output is correct
23	Correct	6 ms	38956 KB	Output is correct
24	Correct	5 ms	38956 KB	Output is correct
25	Correct	8 ms	38956 KB	Output is correct
26	Correct	5 ms	38956 KB	Output is correct
27	Correct	9 ms	38956 KB	Output is correct
28	Correct	17 ms	38956 KB	Output is correct
29	Correct	113 ms	38956 KB	Output is correct
30	Correct	289 ms	38956 KB	Output is correct
31	Correct	118 ms	38956 KB	Output is correct
32	Correct	157 ms	38956 KB	Output is correct
33	Correct	185 ms	38956 KB	Output is correct
34	Correct	16 ms	38956 KB	Output is correct
35	Correct	183 ms	38956 KB	Output is correct
36	Correct	106 ms	38956 KB	Output is correct
37	Correct	2 ms	38956 KB	Output is correct
38	Execution timed out	1072 ms	68020 KB	Time limit exceeded
39	Correct	3 ms	68020 KB	Output is correct
40	Execution timed out	1074 ms	68020 KB	Time limit exceeded
41	Correct	2 ms	68020 KB	Output is correct
42	Correct	9 ms	68020 KB	Output is correct
43	Execution timed out	1080 ms	68092 KB	Time limit exceeded
44	Correct	516 ms	68092 KB	Output is correct
45	Execution timed out	1083 ms	68092 KB	Time limit exceeded
46	Execution timed out	1086 ms	68116 KB	Time limit exceeded
47	Execution timed out	1086 ms	68116 KB	Time limit exceeded
48	Execution timed out	1080 ms	68116 KB	Time limit exceeded
49	Correct	513 ms	68220 KB	Output is correct
50	Execution timed out	1084 ms	68220 KB	Time limit exceeded
51	Execution timed out	1091 ms	68220 KB	Time limit exceeded
52	Execution timed out	1095 ms	68220 KB	Time limit exceeded
53	Execution timed out	1082 ms	68220 KB	Time limit exceeded
54	Execution timed out	1088 ms	68220 KB	Time limit exceeded
55	Execution timed out	1073 ms	68220 KB	Time limit exceeded
56	Execution timed out	1086 ms	68220 KB	Time limit exceeded
57	Execution timed out	1085 ms	68220 KB	Time limit exceeded
58	Execution timed out	1087 ms	68220 KB	Time limit exceeded
59	Execution timed out	1092 ms	68220 KB	Time limit exceeded
60	Execution timed out	1082 ms	68220 KB	Time limit exceeded
61	Execution timed out	1047 ms	68220 KB	Time limit exceeded
62	Execution timed out	1084 ms	68220 KB	Time limit exceeded
63	Execution timed out	1081 ms	68220 KB	Time limit exceeded
64	Execution timed out	1076 ms	68220 KB	Time limit exceeded
65	Execution timed out	1097 ms	68220 KB	Time limit exceeded
66	Correct	775 ms	68220 KB	Output is correct
67	Execution timed out	1078 ms	68220 KB	Time limit exceeded
68	Execution timed out	1079 ms	68220 KB	Time limit exceeded
69	Execution timed out	1087 ms	68220 KB	Time limit exceeded
70	Execution timed out	1076 ms	68220 KB	Time limit exceeded
71	Execution timed out	1078 ms	68220 KB	Time limit exceeded
72	Execution timed out	1070 ms	68220 KB	Time limit exceeded
73	Execution timed out	1071 ms	68220 KB	Time limit exceeded
74	Execution timed out	1066 ms	68220 KB	Time limit exceeded
75	Execution timed out	1078 ms	68220 KB	Time limit exceeded
76	Execution timed out	1074 ms	68220 KB	Time limit exceeded
77	Execution timed out	1080 ms	68220 KB	Time limit exceeded
78	Execution timed out	1037 ms	68220 KB	Time limit exceeded
79	Execution timed out	1076 ms	68220 KB	Time limit exceeded
80	Execution timed out	1076 ms	68220 KB	Time limit exceeded
81	Execution timed out	1066 ms	68220 KB	Time limit exceeded
82	Execution timed out	1047 ms	68220 KB	Time limit exceeded
83	Execution timed out	1061 ms	68220 KB	Time limit exceeded
84	Execution timed out	1073 ms	68220 KB	Time limit exceeded
85	Execution timed out	1081 ms	68220 KB	Time limit exceeded
86	Execution timed out	1076 ms	68220 KB	Time limit exceeded
87	Execution timed out	1077 ms	68220 KB	Time limit exceeded
88	Execution timed out	1039 ms	68220 KB	Time limit exceeded
89	Execution timed out	1081 ms	68220 KB	Time limit exceeded
90	Execution timed out	1076 ms	68220 KB	Time limit exceeded
91	Execution timed out	1070 ms	68320 KB	Time limit exceeded
92	Execution timed out	1055 ms	68320 KB	Time limit exceeded
93	Execution timed out	1043 ms	68320 KB	Time limit exceeded
94	Execution timed out	1068 ms	68320 KB	Time limit exceeded
95	Execution timed out	1073 ms	68376 KB	Time limit exceeded
96	Execution timed out	1058 ms	68376 KB	Time limit exceeded
97	Execution timed out	1070 ms	68376 KB	Time limit exceeded
98	Execution timed out	1089 ms	68376 KB	Time limit exceeded
99	Execution timed out	1079 ms	68376 KB	Time limit exceeded
100	Execution timed out	1077 ms	68376 KB	Time limit exceeded

답안 #88108

Compilation message

Subtask #1 43.0 / 100.0

Subtask #1
43.0 / 100.0