| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 172156 |
2019-12-31T11:49:28 Z |
MvC |
Bomb (IZhO17_bomb) |
C++11 |
|
1000 ms |
129164 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);
//if(n*m>=1e6)rc(x*y);
for(i=x;i>=1;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);
if((ld)(clock()/CLOCKS_PER_SEC)>0.8)rc(rs);
}
cout<<rs<<endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
632 KB |
Output is correct |
| 3 |
Correct |
52 ms |
50600 KB |
Output is correct |
| 4 |
Correct |
61 ms |
50552 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 |
632 KB |
Output is correct |
| 9 |
Correct |
2 ms |
760 KB |
Output is correct |
| 10 |
Correct |
2 ms |
632 KB |
Output is correct |
| 11 |
Correct |
2 ms |
760 KB |
Output is correct |
| 12 |
Correct |
2 ms |
632 KB |
Output is correct |
| 13 |
Correct |
3 ms |
680 KB |
Output is correct |
| 14 |
Correct |
2 ms |
632 KB |
Output is correct |
| 15 |
Correct |
2 ms |
632 KB |
Output is correct |
| 16 |
Correct |
2 ms |
760 KB |
Output is correct |
| 17 |
Correct |
4 ms |
1788 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1528 KB |
Output is correct |
| 19 |
Correct |
6 ms |
2044 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 |
1700 KB |
Output is correct |
| 23 |
Correct |
9 ms |
2168 KB |
Output is correct |
| 24 |
Correct |
5 ms |
1912 KB |
Output is correct |
| 25 |
Correct |
8 ms |
2424 KB |
Output is correct |
| 26 |
Correct |
8 ms |
2624 KB |
Output is correct |
| 27 |
Correct |
13 ms |
7800 KB |
Output is correct |
| 28 |
Correct |
16 ms |
5624 KB |
Output is correct |
| 29 |
Correct |
361 ms |
10360 KB |
Output is correct |
| 30 |
Correct |
285 ms |
10872 KB |
Output is correct |
| 31 |
Correct |
168 ms |
8312 KB |
Output is correct |
| 32 |
Correct |
215 ms |
9976 KB |
Output is correct |
| 33 |
Correct |
453 ms |
12156 KB |
Output is correct |
| 34 |
Correct |
17 ms |
6264 KB |
Output is correct |
| 35 |
Correct |
51 ms |
8824 KB |
Output is correct |
| 36 |
Correct |
469 ms |
13432 KB |
Output is correct |
| 37 |
Correct |
2 ms |
760 KB |
Output is correct |
| 38 |
Execution timed out |
1082 ms |
127888 KB |
Time limit exceeded |
| 39 |
Correct |
3 ms |
772 KB |
Output is correct |
| 40 |
Execution timed out |
1018 ms |
33692 KB |
Time limit exceeded |
| 41 |
Correct |
2 ms |
808 KB |
Output is correct |
| 42 |
Correct |
13 ms |
2600 KB |
Output is correct |
| 43 |
Execution timed out |
1028 ms |
124560 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1006 ms |
12880 KB |
Time limit exceeded |
| 45 |
Execution timed out |
1027 ms |
126228 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1059 ms |
129120 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1044 ms |
126320 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1078 ms |
129020 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1084 ms |
129148 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1085 ms |
129068 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1091 ms |
129016 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1059 ms |
129144 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1046 ms |
128172 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1022 ms |
115760 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1093 ms |
113912 KB |
Time limit exceeded |
| 56 |
Execution timed out |
1028 ms |
129016 KB |
Time limit exceeded |
| 57 |
Execution timed out |
1049 ms |
109112 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1084 ms |
114112 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1087 ms |
110968 KB |
Time limit exceeded |
| 60 |
Execution timed out |
1086 ms |
120824 KB |
Time limit exceeded |
| 61 |
Execution timed out |
1083 ms |
129116 KB |
Time limit exceeded |
| 62 |
Execution timed out |
1085 ms |
128888 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1012 ms |
129144 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1039 ms |
111836 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1097 ms |
127864 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1088 ms |
124668 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1092 ms |
128968 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1012 ms |
129164 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1046 ms |
108664 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1028 ms |
73080 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1043 ms |
101296 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1061 ms |
107196 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1026 ms |
107596 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1081 ms |
109148 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1061 ms |
110644 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1098 ms |
112120 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1012 ms |
112660 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1067 ms |
112824 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1049 ms |
84932 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1046 ms |
85872 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1018 ms |
85872 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1012 ms |
114424 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1098 ms |
111244 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1012 ms |
79224 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1090 ms |
112508 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1035 ms |
123820 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1079 ms |
109024 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1034 ms |
109724 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1010 ms |
118392 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1043 ms |
87416 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1043 ms |
113648 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1060 ms |
114908 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1076 ms |
122076 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1033 ms |
116612 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1064 ms |
110332 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1047 ms |
109712 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1076 ms |
122160 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1060 ms |
109452 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1024 ms |
115448 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1029 ms |
120568 KB |
Time limit exceeded |
