oj.uz

Submission #88090

# Submission time Handle Problem Language Result Execution time Memory
88090 2018-12-03T19:34:32 Z Pajaraja Bomb (IZhO17_bomb) C++17
4 / 100
 1000 ms 132096 KB 
#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<=lv;i++)
	{
		while(!provera(i,lv)) lh--; 
		sol=max(sol,lh*i);
	}
	printf("%d",sol);
}

Subtask #1
4.0 / 100.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1076 ms 376 KB Time limit exceeded
2 Execution timed out 1069 ms 632 KB Time limit exceeded
3 Execution timed out 1088 ms 26696 KB Time limit exceeded
4 Execution timed out 1085 ms 26696 KB Time limit exceeded
5 Execution timed out 1084 ms 26696 KB Time limit exceeded
6 Execution timed out 1085 ms 26696 KB Time limit exceeded
7 Correct 2 ms 26696 KB Output is correct
8 Execution timed out 1080 ms 26696 KB Time limit exceeded
9 Execution timed out 1081 ms 26696 KB Time limit exceeded
10 Execution timed out 1083 ms 26696 KB Time limit exceeded
11 Execution timed out 1090 ms 26696 KB Time limit exceeded
12 Execution timed out 1084 ms 26696 KB Time limit exceeded
13 Execution timed out 1089 ms 26696 KB Time limit exceeded
14 Execution timed out 1083 ms 26696 KB Time limit exceeded
15 Execution timed out 1089 ms 26696 KB Time limit exceeded
16 Execution timed out 1066 ms 26696 KB Time limit exceeded
17 Execution timed out 1092 ms 26696 KB Time limit exceeded
18 Execution timed out 1073 ms 26696 KB Time limit exceeded
19 Execution timed out 1081 ms 26696 KB Time limit exceeded
20 Execution timed out 1071 ms 26696 KB Time limit exceeded
21 Execution timed out 1075 ms 26696 KB Time limit exceeded
22 Execution timed out 1059 ms 26696 KB Time limit exceeded
23 Execution timed out 1054 ms 26696 KB Time limit exceeded
24 Execution timed out 1060 ms 26696 KB Time limit exceeded
25 Execution timed out 1071 ms 26696 KB Time limit exceeded
26 Correct 5 ms 26696 KB Output is correct
27 Execution timed out 1080 ms 26696 KB Time limit exceeded
28 Execution timed out 1083 ms 26696 KB Time limit exceeded
29 Incorrect 80 ms 26696 KB Output isn't correct
30 Execution timed out 1066 ms 26696 KB Time limit exceeded
31 Execution timed out 1074 ms 26696 KB Time limit exceeded
32 Execution timed out 1077 ms 26696 KB Time limit exceeded
33 Execution timed out 1080 ms 26696 KB Time limit exceeded
34 Execution timed out 1061 ms 26696 KB Time limit exceeded
35 Execution timed out 1083 ms 26696 KB Time limit exceeded
36 Correct 90 ms 26696 KB Output is correct
37 Execution timed out 1079 ms 26696 KB Time limit exceeded
38 Execution timed out 1075 ms 69656 KB Time limit exceeded
39 Execution timed out 1065 ms 69656 KB Time limit exceeded
40 Execution timed out 1073 ms 69656 KB Time limit exceeded
41 Execution timed out 1063 ms 69656 KB Time limit exceeded
42 Execution timed out 1074 ms 69656 KB Time limit exceeded
43 Execution timed out 1071 ms 76500 KB Time limit exceeded
44 Execution timed out 1083 ms 76500 KB Time limit exceeded
45 Execution timed out 1082 ms 82948 KB Time limit exceeded
46 Execution timed out 1079 ms 88932 KB Time limit exceeded
47 Execution timed out 1086 ms 95136 KB Time limit exceeded
48 Execution timed out 1076 ms 101284 KB Time limit exceeded
49 Correct 612 ms 107288 KB Output is correct
50 Execution timed out 1075 ms 113020 KB Time limit exceeded
51 Execution timed out 1083 ms 118892 KB Time limit exceeded
52 Execution timed out 1074 ms 124932 KB Time limit exceeded
53 Execution timed out 1072 ms 131120 KB Time limit exceeded
54 Execution timed out 1065 ms 132096 KB Time limit exceeded
55 Execution timed out 1077 ms 132096 KB Time limit exceeded
56 Execution timed out 1063 ms 132096 KB Time limit exceeded
57 Execution timed out 1082 ms 132096 KB Time limit exceeded
58 Execution timed out 1076 ms 132096 KB Time limit exceeded
59 Execution timed out 1066 ms 132096 KB Time limit exceeded
60 Execution timed out 1077 ms 132096 KB Time limit exceeded
61 Execution timed out 1074 ms 132096 KB Time limit exceeded
62 Execution timed out 1084 ms 132096 KB Time limit exceeded
63 Execution timed out 1042 ms 132096 KB Time limit exceeded
64 Execution timed out 1058 ms 132096 KB Time limit exceeded
65 Execution timed out 1031 ms 132096 KB Time limit exceeded
66 Execution timed out 1047 ms 132096 KB Time limit exceeded
67 Execution timed out 1091 ms 132096 KB Time limit exceeded
68 Execution timed out 1099 ms 132096 KB Time limit exceeded
69 Execution timed out 1063 ms 132096 KB Time limit exceeded
70 Execution timed out 1074 ms 132096 KB Time limit exceeded
71 Execution timed out 1050 ms 132096 KB Time limit exceeded
72 Execution timed out 1096 ms 132096 KB Time limit exceeded
73 Execution timed out 1060 ms 132096 KB Time limit exceeded
74 Execution timed out 1070 ms 132096 KB Time limit exceeded
75 Execution timed out 1073 ms 132096 KB Time limit exceeded
76 Execution timed out 1065 ms 132096 KB Time limit exceeded
77 Execution timed out 1047 ms 132096 KB Time limit exceeded
78 Execution timed out 1078 ms 132096 KB Time limit exceeded
79 Execution timed out 1075 ms 132096 KB Time limit exceeded
80 Execution timed out 1063 ms 132096 KB Time limit exceeded
81 Execution timed out 1051 ms 132096 KB Time limit exceeded
82 Execution timed out 1066 ms 132096 KB Time limit exceeded
83 Execution timed out 1074 ms 132096 KB Time limit exceeded
84 Execution timed out 1067 ms 132096 KB Time limit exceeded
85 Execution timed out 1033 ms 132096 KB Time limit exceeded
86 Execution timed out 1042 ms 132096 KB Time limit exceeded
87 Execution timed out 1094 ms 132096 KB Time limit exceeded
88 Execution timed out 1037 ms 132096 KB Time limit exceeded
89 Execution timed out 1067 ms 132096 KB Time limit exceeded
90 Execution timed out 1078 ms 132096 KB Time limit exceeded
91 Execution timed out 1066 ms 132096 KB Time limit exceeded
92 Execution timed out 1071 ms 132096 KB Time limit exceeded
93 Execution timed out 1076 ms 132096 KB Time limit exceeded
94 Execution timed out 1074 ms 132096 KB Time limit exceeded
95 Execution timed out 1084 ms 132096 KB Time limit exceeded
96 Execution timed out 1062 ms 132096 KB Time limit exceeded
97 Execution timed out 1087 ms 132096 KB Time limit exceeded
98 Execution timed out 1050 ms 132096 KB Time limit exceeded
99 Execution timed out 1053 ms 132096 KB Time limit exceeded
100 Execution timed out 1093 ms 132096 KB Time limit exceeded