oj.uz

답안 #172150

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
172150 2019-12-31T11:37:23 Z MvC Bomb (IZhO17_bomb) C++11
40 / 100
 1000 ms 129152 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=2505;
const int mod=1e9+7;
using namespace std;
int n,m,i,j,cur,h[nmax][nmax],v[nmax][nmax],x,y,a[nmax][nmax],ad[nmax][nmax],b[nmax][nmax],rs,mid,l,r;
char c;
bool ok(int h,int w)
{
	int i,j,x;
	for(i=1;i<=n;i++)for(j=1;j<=m;j++)ad[i][j]=0;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=m;j++)
		{
			if(i<=n-h+1 && j<=m-w+1)
			{
				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]++;
				}
			}
			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];
		}
	}
	x=y=inf;
	for(i=1;i<=n;i++)
	{
		for(j=m;j>=1;j--)
		{
			if(a[i][j])
			{
				h[i][j]=h[i][j+1]+1;
				if(!a[i][j-1])y=min(y,h[i][j]);
			}
		}
	}
	for(i=1;i<=m;i++)
	{
		for(j=n;j>=1;j--)
		{
			if(a[j][i])
			{
				v[j][i]=v[j+1][i]+1;
				if(!a[j-1][i])x=min(x,v[j][i]);
			}
		}
	}
	if(x==inf)rc(0);
	for(i=1;i<=x;i++)
	{
		l=1,r=y,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
40.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 760 KB Output is correct
3 Correct 52 ms 50628 KB Output is correct
4 Correct 55 ms 50568 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 504 KB Output is correct
8 Correct 2 ms 760 KB Output is correct
9 Correct 2 ms 760 KB Output is correct
10 Correct 3 ms 636 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 632 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 2 ms 632 KB Output is correct
15 Correct 3 ms 632 KB Output is correct
16 Correct 3 ms 760 KB Output is correct
17 Correct 4 ms 1784 KB Output is correct
18 Correct 4 ms 1528 KB Output is correct
19 Correct 5 ms 2040 KB Output is correct
20 Correct 5 ms 2040 KB Output is correct
21 Correct 3 ms 1272 KB Output is correct
22 Correct 4 ms 1656 KB Output is correct
23 Correct 7 ms 2168 KB Output is correct
24 Correct 5 ms 1912 KB Output is correct
25 Correct 9 ms 2552 KB Output is correct
26 Correct 8 ms 2552 KB Output is correct
27 Correct 13 ms 7772 KB Output is correct
28 Correct 18 ms 5624 KB Output is correct
29 Correct 366 ms 10488 KB Output is correct
30 Correct 284 ms 10744 KB Output is correct
31 Correct 169 ms 8184 KB Output is correct
32 Correct 219 ms 9976 KB Output is correct
33 Correct 442 ms 12236 KB Output is correct
34 Correct 17 ms 6264 KB Output is correct
35 Correct 54 ms 8952 KB Output is correct
36 Correct 477 ms 13476 KB Output is correct
37 Correct 4 ms 760 KB Output is correct
38 Execution timed out 1088 ms 129012 KB Time limit exceeded
39 Correct 2 ms 760 KB Output is correct
40 Execution timed out 1090 ms 33628 KB Time limit exceeded
41 Correct 2 ms 764 KB Output is correct
42 Correct 13 ms 2552 KB Output is correct
43 Execution timed out 1085 ms 124856 KB Time limit exceeded
44 Execution timed out 1083 ms 12792 KB Time limit exceeded
45 Execution timed out 1096 ms 126584 KB Time limit exceeded
46 Execution timed out 1080 ms 129016 KB Time limit exceeded
47 Execution timed out 1083 ms 126596 KB Time limit exceeded
48 Execution timed out 1079 ms 128956 KB Time limit exceeded
49 Execution timed out 1089 ms 128944 KB Time limit exceeded
50 Execution timed out 1091 ms 129016 KB Time limit exceeded
51 Execution timed out 1085 ms 128956 KB Time limit exceeded
52 Execution timed out 1090 ms 129048 KB Time limit exceeded
53 Execution timed out 1096 ms 128152 KB Time limit exceeded
54 Execution timed out 1083 ms 115844 KB Time limit exceeded
55 Execution timed out 1074 ms 110480 KB Time limit exceeded
56 Execution timed out 1077 ms 129016 KB Time limit exceeded
57 Execution timed out 1068 ms 105976 KB Time limit exceeded
58 Execution timed out 1065 ms 110808 KB Time limit exceeded
59 Execution timed out 1064 ms 107884 KB Time limit exceeded
60 Execution timed out 1081 ms 121016 KB Time limit exceeded
61 Execution timed out 1078 ms 129068 KB Time limit exceeded
62 Execution timed out 1079 ms 129016 KB Time limit exceeded
63 Execution timed out 1078 ms 129016 KB Time limit exceeded
64 Execution timed out 1084 ms 111864 KB Time limit exceeded
65 Execution timed out 1076 ms 127992 KB Time limit exceeded
66 Execution timed out 1042 ms 124640 KB Time limit exceeded
67 Execution timed out 1024 ms 129152 KB Time limit exceeded
68 Execution timed out 1077 ms 128888 KB Time limit exceeded
69 Execution timed out 1080 ms 108280 KB Time limit exceeded
70 Execution timed out 1073 ms 72192 KB Time limit exceeded
71 Execution timed out 1072 ms 101148 KB Time limit exceeded
72 Execution timed out 1075 ms 106744 KB Time limit exceeded
73 Execution timed out 1075 ms 107640 KB Time limit exceeded
74 Execution timed out 1079 ms 109120 KB Time limit exceeded
75 Execution timed out 1079 ms 110796 KB Time limit exceeded
76 Execution timed out 1078 ms 112056 KB Time limit exceeded
77 Execution timed out 1091 ms 112632 KB Time limit exceeded
78 Execution timed out 1094 ms 112832 KB Time limit exceeded
79 Execution timed out 1092 ms 84988 KB Time limit exceeded
80 Execution timed out 1085 ms 86392 KB Time limit exceeded
81 Execution timed out 1084 ms 86776 KB Time limit exceeded
82 Execution timed out 1060 ms 113724 KB Time limit exceeded
83 Execution timed out 1096 ms 115496 KB Time limit exceeded
84 Execution timed out 1090 ms 80248 KB Time limit exceeded
85 Execution timed out 1096 ms 114424 KB Time limit exceeded
86 Execution timed out 1091 ms 127988 KB Time limit exceeded
87 Execution timed out 1088 ms 113560 KB Time limit exceeded
88 Execution timed out 1086 ms 114220 KB Time limit exceeded
89 Execution timed out 1093 ms 123056 KB Time limit exceeded
90 Execution timed out 1089 ms 87416 KB Time limit exceeded
91 Execution timed out 1093 ms 118136 KB Time limit exceeded
92 Execution timed out 1085 ms 119808 KB Time limit exceeded
93 Execution timed out 1082 ms 127064 KB Time limit exceeded
94 Execution timed out 1080 ms 121720 KB Time limit exceeded
95 Execution timed out 1078 ms 115548 KB Time limit exceeded
96 Execution timed out 1078 ms 114812 KB Time limit exceeded
97 Execution timed out 1081 ms 127908 KB Time limit exceeded
98 Execution timed out 1082 ms 114960 KB Time limit exceeded
99 Execution timed out 1096 ms 121336 KB Time limit exceeded
100 Execution timed out 1084 ms 126588 KB Time limit exceeded