| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 885650 |
2023-12-10T11:23:59 Z |
alexdd |
Bomb (IZhO17_bomb) |
C++17 |
|
1000 ms |
58052 KB |
#include<iostream>
#pragma GCC optimize("O3,unroll-loops")
using namespace std;
int n,m;
char mat[2505][2505];
int sump[2505][2505];
int mars[2505][2505];
int pver[2505][2505];
bool verif(int cntx, int cnty)
{
if(pver[cntx][cnty]!=0)
{
if(pver[cntx][cnty]==-1)
return 0;
else
return 1;
}
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]++;
}
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')
{
pver[cntx][cnty]=-1;
return 0;
}
}
}
pver[cntx][cnty]=1;
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;
poz = max(poz, (mxm-1)/i+1);
while(poz+1<=miny && verif(i,poz+1))
{
poz++;
}
if(verif(i,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;
poz = max(poz, (mxm-1)/i+1);
while(poz+1<=minx && verif(poz+1,i))
{
poz++;
}
if(verif(poz,i)) mxm = max(mxm, i*poz);
}
cout<<mxm;
}
void solve_bulaneala(int minx, int miny)
{
int mxm=0,prec=1;
for(int i=miny;i>max(0,minx-3);i--)
{
if(i*minx <= mxm)
break;
int st,dr,mij,ans=0;
st=max(prec, (mxm-1)/i+1);
dr=minx;
if(!verif(st,i))
continue;
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);
prec=ans;
}
prec=1;
for(int i=minx;i>max(0,minx-3);i--)
{
if(i*miny <= mxm)
break;
int st,dr,mij,ans=0;
st=max(prec, (mxm-1)/i+1);
dr=miny;
if(!verif(st,i))
continue;
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);
prec=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 |
2 ms |
4440 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 3 |
Correct |
9 ms |
42840 KB |
Output is correct |
| 4 |
Correct |
9 ms |
42844 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4564 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 17 |
Correct |
1 ms |
6748 KB |
Output is correct |
| 18 |
Correct |
2 ms |
6748 KB |
Output is correct |
| 19 |
Correct |
2 ms |
7004 KB |
Output is correct |
| 20 |
Correct |
2 ms |
6880 KB |
Output is correct |
| 21 |
Correct |
1 ms |
6748 KB |
Output is correct |
| 22 |
Correct |
2 ms |
6748 KB |
Output is correct |
| 23 |
Correct |
2 ms |
7004 KB |
Output is correct |
| 24 |
Correct |
1 ms |
7004 KB |
Output is correct |
| 25 |
Correct |
2 ms |
7000 KB |
Output is correct |
| 26 |
Correct |
2 ms |
7004 KB |
Output is correct |
| 27 |
Correct |
5 ms |
12188 KB |
Output is correct |
| 28 |
Correct |
7 ms |
12120 KB |
Output is correct |
| 29 |
Incorrect |
29 ms |
12760 KB |
Output isn't correct |
| 30 |
Correct |
45 ms |
13404 KB |
Output is correct |
| 31 |
Correct |
32 ms |
12844 KB |
Output is correct |
| 32 |
Correct |
40 ms |
13236 KB |
Output is correct |
| 33 |
Correct |
111 ms |
15956 KB |
Output is correct |
| 34 |
Correct |
6 ms |
12380 KB |
Output is correct |
| 35 |
Correct |
45 ms |
15192 KB |
Output is correct |
| 36 |
Correct |
24 ms |
15196 KB |
Output is correct |
| 37 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 38 |
Correct |
257 ms |
57364 KB |
Output is correct |
| 39 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 40 |
Correct |
55 ms |
25684 KB |
Output is correct |
| 41 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 42 |
Correct |
2 ms |
7004 KB |
Output is correct |
| 43 |
Correct |
379 ms |
57312 KB |
Output is correct |
| 44 |
Correct |
81 ms |
15948 KB |
Output is correct |
| 45 |
Incorrect |
505 ms |
57316 KB |
Output isn't correct |
| 46 |
Correct |
720 ms |
57432 KB |
Output is correct |
| 47 |
Incorrect |
826 ms |
57844 KB |
Output isn't correct |
| 48 |
Execution timed out |
1073 ms |
57768 KB |
Time limit exceeded |
| 49 |
Correct |
284 ms |
57444 KB |
Output is correct |
| 50 |
Execution timed out |
1076 ms |
57568 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1058 ms |
57696 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1064 ms |
57428 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1034 ms |
57424 KB |
Time limit exceeded |
| 54 |
Execution timed out |
1092 ms |
57572 KB |
Time limit exceeded |
| 55 |
Execution timed out |
1050 ms |
57680 KB |
Time limit exceeded |
| 56 |
Incorrect |
228 ms |
57428 KB |
Output isn't correct |
| 57 |
Execution timed out |
1102 ms |
57732 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1030 ms |
57396 KB |
Time limit exceeded |
| 59 |
Execution timed out |
1052 ms |
57308 KB |
Time limit exceeded |
| 60 |
Correct |
344 ms |
57424 KB |
Output is correct |
| 61 |
Correct |
608 ms |
57936 KB |
Output is correct |
| 62 |
Incorrect |
240 ms |
57428 KB |
Output isn't correct |
| 63 |
Correct |
321 ms |
57424 KB |
Output is correct |
| 64 |
Correct |
381 ms |
57472 KB |
Output is correct |
| 65 |
Incorrect |
460 ms |
57744 KB |
Output isn't correct |
| 66 |
Correct |
393 ms |
57428 KB |
Output is correct |
| 67 |
Execution timed out |
1052 ms |
57540 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1037 ms |
57556 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1062 ms |
57516 KB |
Time limit exceeded |
| 70 |
Incorrect |
139 ms |
50172 KB |
Output isn't correct |
| 71 |
Incorrect |
217 ms |
57424 KB |
Output isn't correct |
| 72 |
Execution timed out |
1020 ms |
57472 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1014 ms |
57424 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1058 ms |
57324 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1054 ms |
57684 KB |
Time limit exceeded |
| 76 |
Incorrect |
813 ms |
57428 KB |
Output isn't correct |
| 77 |
Incorrect |
439 ms |
57572 KB |
Output isn't correct |
| 78 |
Incorrect |
482 ms |
57316 KB |
Output isn't correct |
| 79 |
Execution timed out |
1056 ms |
57956 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1097 ms |
58052 KB |
Time limit exceeded |
| 81 |
Incorrect |
542 ms |
57308 KB |
Output isn't correct |
| 82 |
Incorrect |
391 ms |
57424 KB |
Output isn't correct |
| 83 |
Incorrect |
218 ms |
57424 KB |
Output isn't correct |
| 84 |
Execution timed out |
1016 ms |
57368 KB |
Time limit exceeded |
| 85 |
Incorrect |
351 ms |
57336 KB |
Output isn't correct |
| 86 |
Correct |
374 ms |
57324 KB |
Output is correct |
| 87 |
Execution timed out |
1041 ms |
57560 KB |
Time limit exceeded |
| 88 |
Incorrect |
245 ms |
57320 KB |
Output isn't correct |
| 89 |
Incorrect |
644 ms |
57472 KB |
Output isn't correct |
| 90 |
Incorrect |
291 ms |
50436 KB |
Output isn't correct |
| 91 |
Incorrect |
569 ms |
57680 KB |
Output isn't correct |
| 92 |
Incorrect |
219 ms |
57268 KB |
Output isn't correct |
| 93 |
Incorrect |
223 ms |
57208 KB |
Output isn't correct |
| 94 |
Incorrect |
563 ms |
57432 KB |
Output isn't correct |
| 95 |
Incorrect |
223 ms |
57424 KB |
Output isn't correct |
| 96 |
Incorrect |
217 ms |
57424 KB |
Output isn't correct |
| 97 |
Incorrect |
309 ms |
57324 KB |
Output isn't correct |
| 98 |
Incorrect |
225 ms |
57568 KB |
Output isn't correct |
| 99 |
Incorrect |
523 ms |
57476 KB |
Output isn't correct |
| 100 |
Incorrect |
267 ms |
57656 KB |
Output isn't correct |
