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답안 #172132

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
172132 2019-12-31T10:51:38 Z MvC Bomb (IZhO17_bomb) C++11
37 / 100
 1000 ms 96216 KB 
//#pragma GCC target("avx2")
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=3e3+50;
const int mod=1e9+7;
using namespace std;
int n,m,i,j,l,r,mid,rs,cur,ad[nmax][nmax],b[nmax][nmax],a[nmax][nmax];
char c;
bool ok(int h,int w)
{
	int i,j,x;
	for(i=0;i<=n+1;i++)for(j=0;j<=m+1;j++)ad[i][j]=0;
	for(i=1;i<=n-h+1;i++)
	{
		for(j=1;j<=m-w+1;j++)
		{
			x=b[i+h-1][j+w-1]-b[i+h-1][j-1]-b[i-1][j+w-1]+b[i-1][j-1];
			if(x==h*w)
			{
				ad[i][j]++;
				ad[i][j+w]--;
				ad[i+h][j]--;
				ad[i+h][j+w]++;
			}
		}
	}
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=m;j++)
		{
			ad[i][j]+=ad[i-1][j]+ad[i][j-1]-ad[i-1][j-1];
			if(!ad[i][j] && a[i][j])return 0;
		}
	}
	return 1;
}
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>m;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=m;j++)
		{
			cin>>c;
			a[i][j]=(c=='1');
			b[i][j]=a[i][j]+b[i-1][j]+b[i][j-1]-b[i-1][j-1];
		}
	}
	for(i=1;i<=n;i++)
	{
		l=1,r=m,cur=0;
		while(l<=r)
		{
			mid=(l+r)/2;
			if(ok(i,mid))cur=mid,l=mid+1;
			else r=mid-1;
		}
		rs=max(rs,i*cur);
	}
	cout<<rs<<endl;
	return 0;
}

Subtask #1
37.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 632 KB Output is correct
3 Correct 201 ms 30712 KB Output is correct
4 Correct 181 ms 30584 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 632 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 3 ms 632 KB Output is correct
17 Correct 6 ms 1272 KB Output is correct
18 Correct 5 ms 1272 KB Output is correct
19 Correct 10 ms 1656 KB Output is correct
20 Correct 10 ms 1528 KB Output is correct
21 Correct 5 ms 1016 KB Output is correct
22 Correct 8 ms 1400 KB Output is correct
23 Correct 14 ms 1656 KB Output is correct
24 Correct 8 ms 1400 KB Output is correct
25 Correct 16 ms 1656 KB Output is correct
26 Correct 17 ms 1656 KB Output is correct
27 Correct 346 ms 4956 KB Output is correct
28 Correct 322 ms 5428 KB Output is correct
29 Correct 764 ms 6648 KB Output is correct
30 Execution timed out 1032 ms 7928 KB Time limit exceeded
31 Correct 639 ms 6368 KB Output is correct
32 Correct 838 ms 7416 KB Output is correct
33 Execution timed out 1064 ms 8312 KB Time limit exceeded
34 Correct 266 ms 5752 KB Output is correct
35 Correct 919 ms 8444 KB Output is correct
36 Execution timed out 1081 ms 8312 KB Time limit exceeded
37 Correct 2 ms 632 KB Output is correct
38 Execution timed out 1083 ms 95952 KB Time limit exceeded
39 Correct 2 ms 632 KB Output is correct
40 Execution timed out 1087 ms 20728 KB Time limit exceeded
41 Correct 2 ms 676 KB Output is correct
42 Correct 19 ms 1660 KB Output is correct
43 Execution timed out 1090 ms 96092 KB Time limit exceeded
44 Execution timed out 1083 ms 8312 KB Time limit exceeded
45 Execution timed out 1068 ms 96048 KB Time limit exceeded
46 Execution timed out 1082 ms 95992 KB Time limit exceeded
47 Execution timed out 1085 ms 95992 KB Time limit exceeded
48 Execution timed out 1078 ms 96064 KB Time limit exceeded
49 Execution timed out 1090 ms 95968 KB Time limit exceeded
50 Execution timed out 1090 ms 95992 KB Time limit exceeded
51 Execution timed out 1092 ms 95992 KB Time limit exceeded
52 Execution timed out 1096 ms 95992 KB Time limit exceeded
53 Execution timed out 1092 ms 95992 KB Time limit exceeded
54 Execution timed out 1087 ms 96216 KB Time limit exceeded
55 Execution timed out 1092 ms 96104 KB Time limit exceeded
56 Execution timed out 1087 ms 96068 KB Time limit exceeded
57 Execution timed out 1080 ms 95992 KB Time limit exceeded
58 Execution timed out 1099 ms 95992 KB Time limit exceeded
59 Execution timed out 1096 ms 95992 KB Time limit exceeded
60 Execution timed out 1092 ms 95992 KB Time limit exceeded
61 Execution timed out 1075 ms 95992 KB Time limit exceeded
62 Execution timed out 1080 ms 96168 KB Time limit exceeded
63 Execution timed out 1093 ms 95992 KB Time limit exceeded
64 Execution timed out 1096 ms 95992 KB Time limit exceeded
65 Execution timed out 1090 ms 96076 KB Time limit exceeded
66 Execution timed out 1098 ms 95992 KB Time limit exceeded
67 Execution timed out 1092 ms 96056 KB Time limit exceeded
68 Execution timed out 1087 ms 96120 KB Time limit exceeded
69 Execution timed out 1088 ms 95992 KB Time limit exceeded
70 Execution timed out 1094 ms 75256 KB Time limit exceeded
71 Execution timed out 1097 ms 95992 KB Time limit exceeded
72 Execution timed out 1077 ms 96120 KB Time limit exceeded
73 Execution timed out 1097 ms 95992 KB Time limit exceeded
74 Execution timed out 1080 ms 96120 KB Time limit exceeded
75 Execution timed out 1086 ms 96164 KB Time limit exceeded
76 Execution timed out 1096 ms 95992 KB Time limit exceeded
77 Execution timed out 1079 ms 95992 KB Time limit exceeded
78 Execution timed out 1089 ms 95992 KB Time limit exceeded
79 Execution timed out 1090 ms 96092 KB Time limit exceeded
80 Execution timed out 1077 ms 96120 KB Time limit exceeded
81 Execution timed out 1076 ms 96072 KB Time limit exceeded
82 Execution timed out 1085 ms 95992 KB Time limit exceeded
83 Execution timed out 1091 ms 95992 KB Time limit exceeded
84 Execution timed out 1093 ms 95992 KB Time limit exceeded
85 Execution timed out 1079 ms 95992 KB Time limit exceeded
86 Execution timed out 1083 ms 96148 KB Time limit exceeded
87 Execution timed out 1094 ms 95936 KB Time limit exceeded
88 Execution timed out 1086 ms 96120 KB Time limit exceeded
89 Execution timed out 1089 ms 95992 KB Time limit exceeded
90 Execution timed out 1060 ms 75320 KB Time limit exceeded
91 Execution timed out 1084 ms 95992 KB Time limit exceeded
92 Execution timed out 1084 ms 95992 KB Time limit exceeded
93 Execution timed out 1082 ms 96120 KB Time limit exceeded
94 Execution timed out 1083 ms 96016 KB Time limit exceeded
95 Execution timed out 1076 ms 96008 KB Time limit exceeded
96 Execution timed out 1088 ms 95992 KB Time limit exceeded
97 Execution timed out 1078 ms 96148 KB Time limit exceeded
98 Execution timed out 1092 ms 96088 KB Time limit exceeded
99 Execution timed out 1086 ms 95992 KB Time limit exceeded
100 Execution timed out 1086 ms 95992 KB Time limit exceeded