| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 832665 |
2023-08-21T13:22:04 Z |
vjudge1 |
Bomb (IZhO17_bomb) |
C++14 |
|
1000 ms |
55552 KB |
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
using namespace std;
#define ll long long
#define rep(i,n,N) for(int i = n; i<=N; ++i)
#define rap(i,n,N) for(int i = n; i>=N; --i)
#define For(i,n,N) for(int i = n; i< N; ++i)
#define endl '\n'
#define pb push_back
#define all(x) x.begin(),x.end()
#define mems(x,y) memset(x,y,sizeof x)
#define ari(x) array<int,x>
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fi first
#define se second
const int MAX = 2500 + 5;
mt19937 rng(time(NULL));
int n,m,mnr,mnc,cnt,y[MAX][MAX],z[MAX][MAX],ans;
char c;
bool x[MAX][MAX];
vector<ari(3)> v;
inline bool cek(int r,int c,int dr,int dc){
return y[r][c] - y[r-dr][c] - y[r][c-dc] + y[r-dr][c-dc] == dr*dc;
}
inline bool solve(int dr,int dc){
rep(i,1,n)mems(z[i], 0);
rep(i,dr,n)rep(j,dc,m)if(x[i][j] && cek(i,j,dr,dc)){
z[i][j]++;
z[i-dr][j]--;
z[i][j-dc]--;
z[i-dr][j-dc]++;
}
rap(i,n,1)rap(j,m,1){
z[i][j]+= z[i+1][j]+z[i][j+1]-z[i+1][j+1];
if((!!z[i][j])!=x[i][j])return 0;
}
return 1;
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>>n>>m;
mnr = n, mnc = m;
rep(i,1,n){
rep(j,1,m){
cin>>c;
x[i][j] = c=='1';
y[i][j] = y[i-1][j]+y[i][j-1]-y[i-1][j-1]+x[i][j];
if(x[i][j])++cnt;
else if(cnt)mnc = min(mnc, cnt), cnt = 0;
}
if(cnt)mnc = min(mnc, cnt), cnt = 0;
}
rep(j,1,m){
rep(i,1,n){
if(x[i][j])++cnt;
else if(cnt)mnr = min(mnr, cnt), cnt = 0;
}
if(cnt)mnr = min(mnr, cnt), cnt = 0;
}
if(solve(mnr, mnc))return cout<<mnr*mnc<<endl,0;
if(n*m > 2e6){
int k = min(mnr, mnc);
while(!solve(k, k))--k;
int r,c;
r = c = k;
while(solve(r+1, c))++r;
while(solve(r, c+1))++c;
cout<<r*c<<endl;
return 0;
}
ans = mnc;
rep(i,2,mnr){
while(i*mnc>ans && !solve(i, mnc))--mnc;
ans = max(ans, i*mnc);
}
cout<<ans<<endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
596 KB |
Output is correct |
| 3 |
Correct |
16 ms |
40916 KB |
Output is correct |
| 4 |
Correct |
16 ms |
40916 KB |
Output is correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
1 ms |
596 KB |
Output is correct |
| 9 |
Correct |
1 ms |
596 KB |
Output is correct |
| 10 |
Correct |
0 ms |
468 KB |
Output is correct |
| 11 |
Correct |
1 ms |
596 KB |
Output is correct |
| 12 |
Correct |
0 ms |
468 KB |
Output is correct |
| 13 |
Correct |
0 ms |
468 KB |
Output is correct |
| 14 |
Correct |
1 ms |
596 KB |
Output is correct |
| 15 |
Correct |
0 ms |
596 KB |
Output is correct |
| 16 |
Correct |
0 ms |
596 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1876 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1876 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 23 |
Correct |
2 ms |
2004 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 25 |
Correct |
2 ms |
2004 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2004 KB |
Output is correct |
| 27 |
Correct |
3 ms |
5460 KB |
Output is correct |
| 28 |
Correct |
6 ms |
5460 KB |
Output is correct |
| 29 |
Correct |
36 ms |
7148 KB |
Output is correct |
| 30 |
Correct |
53 ms |
8020 KB |
Output is correct |
| 31 |
Correct |
39 ms |
6356 KB |
Output is correct |
| 32 |
Correct |
24 ms |
7508 KB |
Output is correct |
| 33 |
Correct |
63 ms |
8452 KB |
Output is correct |
| 34 |
Correct |
6 ms |
6364 KB |
Output is correct |
| 35 |
Correct |
73 ms |
8456 KB |
Output is correct |
| 36 |
Correct |
6 ms |
8404 KB |
Output is correct |
| 37 |
Correct |
1 ms |
596 KB |
Output is correct |
| 38 |
Correct |
119 ms |
55428 KB |
Output is correct |
| 39 |
Correct |
0 ms |
596 KB |
Output is correct |
| 40 |
Correct |
690 ms |
17584 KB |
Output is correct |
| 41 |
Correct |
1 ms |
596 KB |
Output is correct |
| 42 |
Correct |
3 ms |
2004 KB |
Output is correct |
| 43 |
Correct |
104 ms |
55428 KB |
Output is correct |
| 44 |
Correct |
100 ms |
8404 KB |
Output is correct |
| 45 |
Execution timed out |
1094 ms |
55356 KB |
Time limit exceeded |
| 46 |
Correct |
126 ms |
55428 KB |
Output is correct |
| 47 |
Execution timed out |
1098 ms |
55400 KB |
Time limit exceeded |
| 48 |
Correct |
833 ms |
55472 KB |
Output is correct |
| 49 |
Correct |
109 ms |
55476 KB |
Output is correct |
| 50 |
Execution timed out |
1093 ms |
55432 KB |
Time limit exceeded |
| 51 |
Execution timed out |
1088 ms |
55376 KB |
Time limit exceeded |
| 52 |
Execution timed out |
1090 ms |
55372 KB |
Time limit exceeded |
| 53 |
Execution timed out |
1077 ms |
55456 KB |
Time limit exceeded |
| 54 |
Correct |
666 ms |
55472 KB |
Output is correct |
| 55 |
Correct |
370 ms |
55372 KB |
Output is correct |
| 56 |
Correct |
99 ms |
55428 KB |
Output is correct |
| 57 |
Execution timed out |
1091 ms |
55372 KB |
Time limit exceeded |
| 58 |
Execution timed out |
1076 ms |
55464 KB |
Time limit exceeded |
| 59 |
Correct |
506 ms |
55376 KB |
Output is correct |
| 60 |
Correct |
107 ms |
55424 KB |
Output is correct |
| 61 |
Correct |
104 ms |
55476 KB |
Output is correct |
| 62 |
Correct |
103 ms |
55468 KB |
Output is correct |
| 63 |
Correct |
98 ms |
55372 KB |
Output is correct |
| 64 |
Correct |
101 ms |
55396 KB |
Output is correct |
| 65 |
Correct |
783 ms |
55472 KB |
Output is correct |
| 66 |
Execution timed out |
1084 ms |
55416 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1081 ms |
55552 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1087 ms |
55372 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1079 ms |
55464 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1054 ms |
44416 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1086 ms |
55376 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1084 ms |
55404 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1084 ms |
55364 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1090 ms |
55464 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1086 ms |
55412 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1085 ms |
55376 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1095 ms |
55372 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1079 ms |
55452 KB |
Time limit exceeded |
| 79 |
Correct |
767 ms |
55472 KB |
Output is correct |
| 80 |
Execution timed out |
1082 ms |
55464 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1080 ms |
55376 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1080 ms |
55448 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1089 ms |
55372 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1083 ms |
55400 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1082 ms |
55372 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1091 ms |
55448 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1076 ms |
55376 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1089 ms |
55372 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1079 ms |
55424 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1078 ms |
44412 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1076 ms |
55404 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1077 ms |
55460 KB |
Time limit exceeded |
| 93 |
Execution timed out |
1088 ms |
55408 KB |
Time limit exceeded |
| 94 |
Execution timed out |
1077 ms |
55360 KB |
Time limit exceeded |
| 95 |
Execution timed out |
1077 ms |
55460 KB |
Time limit exceeded |
| 96 |
Execution timed out |
1079 ms |
55368 KB |
Time limit exceeded |
| 97 |
Execution timed out |
1033 ms |
55468 KB |
Time limit exceeded |
| 98 |
Execution timed out |
1081 ms |
55460 KB |
Time limit exceeded |
| 99 |
Execution timed out |
1088 ms |
55428 KB |
Time limit exceeded |
| 100 |
Execution timed out |
1090 ms |
55444 KB |
Time limit exceeded |
