| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 885333 |
2023-12-09T13:16:26 Z |
alexdd |
Bomb (IZhO17_bomb) |
C++17 |
|
1000 ms |
55856 KB |
#include<iostream>
using namespace std;
int n,m;
char mat[2505][2505];
int sump[2505][2505];
int mars[2505][2505];
bool verif(int cntx, int cnty)
{
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
mars[i][j]=0;
for(int i=1;i+cntx-1<=n;i++)
{
for(int j=1;j+cnty-1<=m;j++)
{
if(sump[i+cntx-1][j+cnty-1] - sump[i+cntx-1][j-1] - sump[i-1][j+cnty-1] + sump[i-1][j-1] == cntx*cnty)///toate is 1
{
mars[i][j]++;
mars[i][j+cnty]--;
mars[i+cntx][j]--;
mars[i+cntx][j+cnty]++;
}
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
mars[i][j] += mars[i-1][j] + mars[i][j-1] - mars[i-1][j-1];
if(mars[i][j]==0 && mat[i][j]=='1')
return 0;
}
}
return 1;
}
void solve_n3_y(int minx, int miny)
{
int poz=0, mxm=0;
for(int i=minx;i>0;i--)
{
if(i*miny <= mxm)
break;
while(poz+1<=miny && verif(i,poz+1))
{
poz++;
}
mxm = max(mxm, i*poz);
}
cout<<mxm;
}
void solve_n3_x(int minx, int miny)
{
int poz=0, mxm=0;
for(int i=miny;i>0;i--)
{
if(i*minx <= mxm)
break;
while(poz+1<=minx && verif(poz+1,i))
{
poz++;
}
mxm = max(mxm, i*poz);
}
cout<<mxm;
}
void solve_bulaneala(int minx, int miny)
{
int mxm=0;
for(int i=miny;i>max(0,miny-10);i--)
{
if(i*minx <= mxm)
break;
int st,dr,mij,ans=0;
st=1;
dr=minx;
while(st<=dr)
{
mij=(st+dr)/2;
if(verif(mij,i))
{
ans = max(ans, mij);
st=mij+1;
}
else
{
dr=mij-1;
}
}
mxm = max(mxm, i*ans);
}
for(int i=minx;i>max(0,minx-10);i--)
{
if(i*miny <= mxm)
break;
int st,dr,mij,ans=0;
st=1;
dr=miny;
while(st<=dr)
{
mij=(st+dr)/2;
if(verif(i,mij))
{
ans = max(ans, mij);
st=mij+1;
}
else
{
dr=mij-1;
}
}
mxm = max(mxm, i*ans);
}
cout<<mxm;
}
signed main()
{
cin>>n>>m;
int minx=n,miny=m;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
cin>>mat[i][j];
sump[i][j] = sump[i-1][j] + sump[i][j-1] - sump[i-1][j-1];
if(mat[i][j]=='1')
sump[i][j]++;
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(mat[i][j]=='1' && (j==m || mat[i][j+1]=='0'))
{
int cnt=0;
for(int u=j;u>0;u--)
{
if(mat[i][u]=='0')
break;
cnt++;
}
miny = min(miny, cnt);
}
}
}
for(int i=1;i<=m;i++)
{
for(int j=1;j<=n;j++)
{
if(mat[j][i]=='1' && (j==n || mat[j+1][i]=='0'))
{
int cnt=0;
for(int u=j;u>0;u--)
{
if(mat[u][i]=='0')
break;
cnt++;
}
minx = min(minx, cnt);
}
}
}
if(1LL*miny * n * m <= 170000000)
{
solve_n3_y(minx,miny);
return 0;
}
else if(1LL*minx*n*m <= 170000000)
{
solve_n3_x(minx,miny);
return 0;
}
else if(1)
{
solve_bulaneala(minx,miny);
return 0;
}
else
{
cout<<minx*miny;
return 0;
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 3 |
Correct |
8 ms |
40796 KB |
Output is correct |
| 4 |
Correct |
9 ms |
40796 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 20 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 21 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 22 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 23 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 24 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 25 |
Correct |
2 ms |
4952 KB |
Output is correct |
| 26 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 27 |
Correct |
5 ms |
11868 KB |
Output is correct |
| 28 |
Correct |
9 ms |
12088 KB |
Output is correct |
| 29 |
Correct |
48 ms |
11968 KB |
Output is correct |
| 30 |
Correct |
49 ms |
12120 KB |
Output is correct |
| 31 |
Correct |
36 ms |
12136 KB |
Output is correct |
| 32 |
Correct |
46 ms |
11868 KB |
Output is correct |
| 33 |
Correct |
131 ms |
14236 KB |
Output is correct |
| 34 |
Correct |
9 ms |
10328 KB |
Output is correct |
| 35 |
Correct |
63 ms |
14168 KB |
Output is correct |
| 36 |
Correct |
32 ms |
14232 KB |
Output is correct |
| 37 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 38 |
Correct |
465 ms |
55712 KB |
Output is correct |
| 39 |
Correct |
1 ms |
4696 KB |
Output is correct |
| 40 |
Correct |
331 ms |
21940 KB |
Output is correct |
| 41 |
Correct |
1 ms |
4952 KB |
Output is correct |
| 42 |
Correct |
3 ms |
4956 KB |
Output is correct |
| 43 |
Correct |
453 ms |
55460 KB |
Output is correct |
| 44 |
Correct |
184 ms |
14232 KB |
Output is correct |
| 45 |
Execution timed out |
1070 ms |
55464 KB |
Time limit exceeded |
| 46 |
Correct |
904 ms |
55608 KB |
Output is correct |
| 47 |
Execution timed out |
1029 ms |
55376 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1067 ms |
55608 KB |
Time limit exceeded |
| 49 |
Correct |
354 ms |
55460 KB |
Output is correct |
| 50 |
Execution timed out |
1053 ms |
55636 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1020 ms |
55456 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1064 ms |
55376 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1032 ms |
55456 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1016 ms |
55408 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1038 ms |
55376 KB |
Time limit exceeded |
| 56 |
Correct |
487 ms |
55376 KB |
Output is correct |
| 57 |
Execution timed out |
1078 ms |
55452 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1048 ms |
55420 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1028 ms |
55456 KB |
Time limit exceeded |
| 60 |
Correct |
364 ms |
55460 KB |
Output is correct |
| 61 |
Correct |
755 ms |
55468 KB |
Output is correct |
| 62 |
Correct |
459 ms |
55732 KB |
Output is correct |
| 63 |
Correct |
460 ms |
55380 KB |
Output is correct |
| 64 |
Correct |
416 ms |
55612 KB |
Output is correct |
| 65 |
Execution timed out |
1098 ms |
55460 KB |
Time limit exceeded |
| 66 |
Correct |
549 ms |
55616 KB |
Output is correct |
| 67 |
Execution timed out |
1079 ms |
55456 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1077 ms |
55484 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1068 ms |
55448 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1031 ms |
48300 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1047 ms |
55420 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1063 ms |
55468 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1039 ms |
55380 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1032 ms |
55460 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1024 ms |
55376 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1012 ms |
55652 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1102 ms |
55480 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1036 ms |
55856 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1068 ms |
55380 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1040 ms |
55464 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1020 ms |
55532 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1073 ms |
55500 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1020 ms |
55380 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1018 ms |
55452 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1043 ms |
55660 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1010 ms |
55376 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1073 ms |
55580 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1038 ms |
55428 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1068 ms |
55468 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1052 ms |
48416 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1043 ms |
55432 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1056 ms |
55380 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1062 ms |
55500 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1066 ms |
55448 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1038 ms |
55596 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1039 ms |
55492 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1046 ms |
55380 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1064 ms |
55528 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1054 ms |
55460 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1052 ms |
55380 KB |
Time limit exceeded |
