oj.uz

답안 #88109

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
88109 2018-12-03T20:16:33 Z Pajaraja Bomb (IZhO17_bomb) C++17
43 / 100
 1000 ms 69340 KB 
#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 3 ms 636 KB Output is correct
3 Correct 59 ms 38940 KB Output is correct
4 Correct 56 ms 38940 KB Output is correct
5 Correct 2 ms 38940 KB Output is correct
6 Correct 2 ms 38940 KB Output is correct
7 Correct 2 ms 38940 KB Output is correct
8 Correct 3 ms 38940 KB Output is correct
9 Correct 3 ms 38940 KB Output is correct
10 Correct 3 ms 38940 KB Output is correct
11 Correct 3 ms 38940 KB Output is correct
12 Correct 3 ms 38940 KB Output is correct
13 Correct 3 ms 38940 KB Output is correct
14 Correct 3 ms 38940 KB Output is correct
15 Correct 3 ms 38940 KB Output is correct
16 Correct 3 ms 38940 KB Output is correct
17 Correct 4 ms 38940 KB Output is correct
18 Correct 4 ms 38940 KB Output is correct
19 Correct 5 ms 38940 KB Output is correct
20 Correct 6 ms 38940 KB Output is correct
21 Correct 4 ms 38940 KB Output is correct
22 Correct 4 ms 38940 KB Output is correct
23 Correct 6 ms 38940 KB Output is correct
24 Correct 5 ms 38940 KB Output is correct
25 Correct 8 ms 38940 KB Output is correct
26 Correct 5 ms 38940 KB Output is correct
27 Correct 10 ms 38940 KB Output is correct
28 Correct 17 ms 38940 KB Output is correct
29 Correct 123 ms 38940 KB Output is correct
30 Correct 267 ms 38940 KB Output is correct
31 Correct 117 ms 38940 KB Output is correct
32 Correct 154 ms 38940 KB Output is correct
33 Correct 179 ms 38940 KB Output is correct
34 Correct 17 ms 38940 KB Output is correct
35 Correct 185 ms 38940 KB Output is correct
36 Correct 102 ms 38940 KB Output is correct
37 Correct 2 ms 38940 KB Output is correct
38 Execution timed out 1051 ms 68508 KB Time limit exceeded
39 Correct 3 ms 68508 KB Output is correct
40 Execution timed out 1078 ms 68508 KB Time limit exceeded
41 Correct 3 ms 68508 KB Output is correct
42 Correct 9 ms 68508 KB Output is correct
43 Execution timed out 1089 ms 68576 KB Time limit exceeded
44 Correct 473 ms 68576 KB Output is correct
45 Execution timed out 1077 ms 68576 KB Time limit exceeded
46 Execution timed out 1058 ms 68576 KB Time limit exceeded
47 Execution timed out 1047 ms 68576 KB Time limit exceeded
48 Execution timed out 1067 ms 68576 KB Time limit exceeded
49 Correct 467 ms 68600 KB Output is correct
50 Execution timed out 1084 ms 68600 KB Time limit exceeded
51 Execution timed out 1069 ms 68600 KB Time limit exceeded
52 Execution timed out 1066 ms 68600 KB Time limit exceeded
53 Execution timed out 1054 ms 68600 KB Time limit exceeded
54 Execution timed out 1060 ms 68600 KB Time limit exceeded
55 Execution timed out 1074 ms 68724 KB Time limit exceeded
56 Execution timed out 1072 ms 68804 KB Time limit exceeded
57 Execution timed out 1062 ms 68804 KB Time limit exceeded
58 Execution timed out 1074 ms 68804 KB Time limit exceeded
59 Execution timed out 1066 ms 68804 KB Time limit exceeded
60 Execution timed out 1067 ms 68804 KB Time limit exceeded
61 Execution timed out 1084 ms 68804 KB Time limit exceeded
62 Execution timed out 1073 ms 68932 KB Time limit exceeded
63 Execution timed out 1084 ms 68932 KB Time limit exceeded
64 Execution timed out 1081 ms 68932 KB Time limit exceeded
65 Execution timed out 1076 ms 68932 KB Time limit exceeded
66 Correct 767 ms 68932 KB Output is correct
67 Execution timed out 1070 ms 69052 KB Time limit exceeded
68 Execution timed out 1089 ms 69052 KB Time limit exceeded
69 Execution timed out 1080 ms 69116 KB Time limit exceeded
70 Execution timed out 1082 ms 69116 KB Time limit exceeded
71 Execution timed out 1070 ms 69116 KB Time limit exceeded
72 Execution timed out 1075 ms 69116 KB Time limit exceeded
73 Execution timed out 1074 ms 69116 KB Time limit exceeded
74 Execution timed out 1076 ms 69116 KB Time limit exceeded
75 Execution timed out 1082 ms 69116 KB Time limit exceeded
76 Execution timed out 1078 ms 69116 KB Time limit exceeded
77 Execution timed out 1071 ms 69116 KB Time limit exceeded
78 Execution timed out 1086 ms 69136 KB Time limit exceeded
79 Execution timed out 1085 ms 69256 KB Time limit exceeded
80 Execution timed out 1082 ms 69256 KB Time limit exceeded
81 Execution timed out 1087 ms 69256 KB Time limit exceeded
82 Execution timed out 1081 ms 69264 KB Time limit exceeded
83 Execution timed out 1078 ms 69264 KB Time limit exceeded
84 Execution timed out 1084 ms 69264 KB Time limit exceeded
85 Execution timed out 1084 ms 69264 KB Time limit exceeded
86 Execution timed out 1070 ms 69340 KB Time limit exceeded
87 Execution timed out 1087 ms 69340 KB Time limit exceeded
88 Execution timed out 1078 ms 69340 KB Time limit exceeded
89 Execution timed out 1087 ms 69340 KB Time limit exceeded
90 Execution timed out 1081 ms 69340 KB Time limit exceeded
91 Execution timed out 1096 ms 69340 KB Time limit exceeded
92 Execution timed out 1091 ms 69340 KB Time limit exceeded
93 Execution timed out 1086 ms 69340 KB Time limit exceeded
94 Execution timed out 1077 ms 69340 KB Time limit exceeded
95 Execution timed out 1087 ms 69340 KB Time limit exceeded
96 Execution timed out 1071 ms 69340 KB Time limit exceeded
97 Execution timed out 1076 ms 69340 KB Time limit exceeded
98 Execution timed out 1084 ms 69340 KB Time limit exceeded
99 Execution timed out 1064 ms 69340 KB Time limit exceeded
100 Execution timed out 1065 ms 69340 KB Time limit exceeded