Submission #88089

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
88089	2018-12-03T19:31:14 Z	Pajaraja	Bomb (IZhO17_bomb)	C++17	4 / 100	1000 ms	132096 KB

bomb

#include <bits/stdc++.h>
using namespace std;
bool t[2507][2507],r[2507][2507];
int p[2507][2507],d[2507][2507],n,m;
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] && p[i][j]-p[i+x][j]-p[i][j+y]+p[i+x][j+y]==0) return false;
	return true;
}
int main()
{
	int lh=2507,lv=2507;
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	{
		string s;
		cin>>s;
		for(int j=1;j<=m;j++) t[i][j]=(s[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<=lh;i++)
	{
		while(!provera(i,lv)) lv--; 
		sol=max(sol,lv*i);
	}
	printf("%d",sol);
}

Subtask #1

4.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	2 ms	376 KB	Output isn't correct
2	Execution timed out	1065 ms	836 KB	Time limit exceeded
3	Execution timed out	1063 ms	32832 KB	Time limit exceeded
4	Execution timed out	1068 ms	32832 KB	Time limit exceeded
5	Incorrect	3 ms	32832 KB	Output isn't correct
6	Incorrect	2 ms	32832 KB	Output isn't correct
7	Correct	2 ms	32832 KB	Output is correct
8	Execution timed out	1072 ms	32832 KB	Time limit exceeded
9	Execution timed out	1061 ms	32832 KB	Time limit exceeded
10	Execution timed out	1067 ms	32832 KB	Time limit exceeded
11	Execution timed out	1053 ms	32832 KB	Time limit exceeded
12	Execution timed out	1073 ms	32832 KB	Time limit exceeded
13	Execution timed out	1064 ms	32832 KB	Time limit exceeded
14	Incorrect	72 ms	32832 KB	Output isn't correct
15	Execution timed out	1069 ms	32832 KB	Time limit exceeded
16	Incorrect	90 ms	32832 KB	Output isn't correct
17	Execution timed out	1077 ms	32832 KB	Time limit exceeded
18	Execution timed out	1073 ms	32832 KB	Time limit exceeded
19	Execution timed out	1074 ms	32832 KB	Time limit exceeded
20	Execution timed out	1086 ms	32832 KB	Time limit exceeded
21	Execution timed out	1088 ms	32832 KB	Time limit exceeded
22	Execution timed out	1084 ms	32832 KB	Time limit exceeded
23	Execution timed out	1073 ms	32832 KB	Time limit exceeded
24	Execution timed out	1080 ms	32832 KB	Time limit exceeded
25	Execution timed out	1078 ms	32832 KB	Time limit exceeded
26	Correct	5 ms	32832 KB	Output is correct
27	Execution timed out	1082 ms	32832 KB	Time limit exceeded
28	Execution timed out	1072 ms	32832 KB	Time limit exceeded
29	Incorrect	82 ms	32832 KB	Output isn't correct
30	Execution timed out	1082 ms	32832 KB	Time limit exceeded
31	Execution timed out	1082 ms	32832 KB	Time limit exceeded
32	Execution timed out	1072 ms	32832 KB	Time limit exceeded
33	Execution timed out	1078 ms	32832 KB	Time limit exceeded
34	Execution timed out	1080 ms	32832 KB	Time limit exceeded
35	Execution timed out	1067 ms	32832 KB	Time limit exceeded
36	Correct	54 ms	32832 KB	Output is correct
37	Incorrect	2 ms	32832 KB	Output isn't correct
38	Execution timed out	1071 ms	69872 KB	Time limit exceeded
39	Incorrect	2 ms	69872 KB	Output isn't correct
40	Execution timed out	1078 ms	69872 KB	Time limit exceeded
41	Incorrect	3 ms	69872 KB	Output isn't correct
42	Incorrect	13 ms	69872 KB	Output isn't correct
43	Execution timed out	1086 ms	76800 KB	Time limit exceeded
44	Incorrect	842 ms	76800 KB	Output isn't correct
45	Execution timed out	1066 ms	83060 KB	Time limit exceeded
46	Execution timed out	1089 ms	89256 KB	Time limit exceeded
47	Execution timed out	1057 ms	95300 KB	Time limit exceeded
48	Execution timed out	1067 ms	101396 KB	Time limit exceeded
49	Correct	467 ms	107520 KB	Output is correct
50	Execution timed out	1085 ms	113780 KB	Time limit exceeded
51	Execution timed out	1091 ms	119956 KB	Time limit exceeded
52	Execution timed out	1069 ms	125896 KB	Time limit exceeded
53	Execution timed out	1033 ms	131996 KB	Time limit exceeded
54	Execution timed out	1083 ms	132096 KB	Time limit exceeded
55	Execution timed out	1067 ms	132096 KB	Time limit exceeded
56	Execution timed out	1080 ms	132096 KB	Time limit exceeded
57	Execution timed out	1078 ms	132096 KB	Time limit exceeded
58	Execution timed out	1084 ms	132096 KB	Time limit exceeded
59	Execution timed out	1088 ms	132096 KB	Time limit exceeded
60	Execution timed out	1066 ms	132096 KB	Time limit exceeded
61	Execution timed out	1092 ms	132096 KB	Time limit exceeded
62	Execution timed out	1028 ms	132096 KB	Time limit exceeded
63	Execution timed out	1080 ms	132096 KB	Time limit exceeded
64	Execution timed out	1084 ms	132096 KB	Time limit exceeded
65	Execution timed out	1081 ms	132096 KB	Time limit exceeded
66	Execution timed out	1049 ms	132096 KB	Time limit exceeded
67	Execution timed out	1048 ms	132096 KB	Time limit exceeded
68	Execution timed out	1043 ms	132096 KB	Time limit exceeded
69	Execution timed out	1055 ms	132096 KB	Time limit exceeded
70	Execution timed out	1059 ms	132096 KB	Time limit exceeded
71	Execution timed out	1035 ms	132096 KB	Time limit exceeded
72	Execution timed out	1062 ms	132096 KB	Time limit exceeded
73	Execution timed out	1058 ms	132096 KB	Time limit exceeded
74	Execution timed out	1081 ms	132096 KB	Time limit exceeded
75	Execution timed out	1072 ms	132096 KB	Time limit exceeded
76	Execution timed out	1016 ms	132096 KB	Time limit exceeded
77	Execution timed out	1061 ms	132096 KB	Time limit exceeded
78	Execution timed out	1018 ms	132096 KB	Time limit exceeded
79	Execution timed out	1050 ms	132096 KB	Time limit exceeded
80	Execution timed out	1026 ms	132096 KB	Time limit exceeded
81	Execution timed out	1074 ms	132096 KB	Time limit exceeded
82	Execution timed out	1068 ms	132096 KB	Time limit exceeded
83	Execution timed out	1018 ms	132096 KB	Time limit exceeded
84	Execution timed out	1043 ms	132096 KB	Time limit exceeded
85	Execution timed out	1008 ms	132096 KB	Time limit exceeded
86	Execution timed out	1048 ms	132096 KB	Time limit exceeded
87	Execution timed out	1043 ms	132096 KB	Time limit exceeded
88	Execution timed out	1054 ms	132096 KB	Time limit exceeded
89	Execution timed out	1030 ms	132096 KB	Time limit exceeded
90	Execution timed out	1008 ms	132096 KB	Time limit exceeded
91	Execution timed out	1074 ms	132096 KB	Time limit exceeded
92	Execution timed out	1070 ms	132096 KB	Time limit exceeded
93	Execution timed out	1091 ms	132096 KB	Time limit exceeded
94	Execution timed out	1083 ms	132096 KB	Time limit exceeded
95	Execution timed out	1059 ms	132096 KB	Time limit exceeded
96	Execution timed out	1065 ms	132096 KB	Time limit exceeded
97	Execution timed out	1102 ms	132096 KB	Time limit exceeded
98	Execution timed out	1058 ms	132096 KB	Time limit exceeded
99	Execution timed out	1049 ms	132096 KB	Time limit exceeded
100	Execution timed out	1076 ms	132096 KB	Time limit exceeded