#include<bits/stdc++.h>
using namespace std;
#define X first
#define Y second
#define sz(a) (int)a.size()
#define ll long long
#define ld long double
const int mod1 = 1e9 + 7;
const int mod2 = 998244353;
const int N = 1e3 + 100;
int A[N][N];
vector <pair <int, int> > mass;
pair <int, int> hashes1[N][N];
pair <int, int> hashes2[N][N];
pair <int, int> hashes3[N][N];
int Pow1[N], Pow2[N];
int n, m;
bool cmp1(int a, int b)
{
for(int j = 0; j < m; j++)
{
if(A[a][j] != A[b][j])
{
return A[a][j] < A[b][j];
}
}
return 0;
}
bool cmp(pair <int, int> a, pair <int, int> b)
{
int i1 = a.X;
int j1 = a.Y;
int i2 = b.X;
int j2 = b.Y;
for(int i = 0; i < n;i++)
{
if(hashes3[(i1 + i) % n][j1] != hashes3[(i2 + i) % n][j2])
{
for(int j = 0; j < m; j++)
{
int k1 = A[(i1 + i) % n][(j1 + j) % m];
int k2 = A[(i2 + i) % m][(j2 + j) % m];
if(k1 != k2)
{
return k1 < k2;
}
}
}
}
return 0;
}
signed main()
{
//ifstream cin("286.txt");
// ios_base::sync_with_stdio(0);
// cin.tie(0);
//cout.tie(0);
cin >> n >> m;
Pow1[0] = Pow2[0] = 1;
for(int i = 1; i < N; i++)
{
Pow1[i] = Pow1[i - 1] * 2 % mod1;
Pow2[i] = Pow2[i - 1] * 2 % mod2;
}
for(int i = 0; i < n; i++)
{
for(int j = 0; j < m; j++)
{
char t;
cin >> t;
if(t == '*')
{
A[i][j] = 0;
}
else
{
A[i][j] = 1;
}
}
}
for(int i = 0; i < n; i++)
{
for(int j = 0; j < m; j++)
{
hashes1[i][j].X = hashes1[i][j].Y = A[i][j];
if(j != 0)
{
hashes1[i][j].X = (hashes1[i][j].X + hashes1[i][j - 1].X * 2) % mod1;
hashes1[i][j].Y = (hashes1[i][j].Y + hashes1[i][j - 1].Y * 2) % mod2;
}
}
}
for(int i = 0; i < n; i++)
{
for(int j = m - 1; j >= 0; j--)
{
hashes2[i][j].X = hashes2[i][j].Y = A[i][j] * Pow1[m - j - 1];
if(j != m - 1)
{
hashes2[i][j].X = (hashes2[i][j].X + hashes2[i][j + 1].X) % mod1;
hashes2[i][j].Y = (hashes2[i][j].Y + hashes2[i][j + 1].Y) % mod2;
}
}
}
for(int i = 0; i < n; i++)
{
for(int j = 0; j < m; j++)
{
if(j == 0)
{
hashes3[i][j] = hashes2[i][j];
}
else
{
hashes3[i][j].X = (hashes1[i][j - 1].X + 1LL * hashes2[i][j].X * Pow1[j]) % mod1;
hashes3[i][j].Y = (hashes1[i][j - 1].Y + 1LL * hashes2[i][j].Y * Pow2[j]) % mod2;
}
}
}
// cout << "A\n";
vector <int> sorted, sorted1, sorted2;
vector <int> st1(n), col(n);
vector <int> cnt(n);
vector <int> start(n);
vector <int> col1(n);
for(int i = 0; i < n; i++)
{
sorted.push_back(i);
}
sort(sorted.begin(), sorted.end(), cmp1);
for(int t = m - 1; t >= 0; t--)
{
for(auto i : sorted)
{
if(A[i][t] == 0)
{
sorted1.push_back(i);
}
else
{
sorted2.push_back(i);
}
}
sorted.clear();
for(auto i : sorted1)
{
sorted.push_back(i);
}
for(auto i : sorted2)
{
sorted.push_back(i);
}
int cl = 0;
col[sorted[0]] = 0;
for(int i = 1; i < n; i++)
{
if(hashes3[sorted[i]][t] != hashes3[sorted[i - 1]][t])
{
cl++;
}
col[sorted[i]] = cl;
}
sorted2 = sorted;
int k = 0;
while((1 << k) <= n)
{
for(int i = 0; i < n; i++)
{
cnt[i] = start[i] = 0;
}
for(int i = 0; i < n; i++)
{
cnt[col[i]]++;
}
for(int i= 1; i < n; i++)
{
start[i] = start[i - 1] + cnt[i - 1];
}
for(auto i : sorted)
{
int of = (i - (1 << k) + n) % n;
st1[start[col[of]]++] = of;
}
int cl = 0;
for(int i = 0; i < n; i++)
{
sorted[i] = st1[i];
if(i != 0)
{
int a = sorted[i - 1];
int b = sorted[i];
if(col[a] != col[b] || col[(a + (1 << k) + n) % n] != col[(b + (1 << k) + n) % n])
{
cl++;
}
}
col1[sorted[i]] = cl;
}
for(int i = 0; i < n; i++)
{
col[i] = col1[i];
}
k++;
}
// cout << sorted[0] << " " << t << "\n";
mass.push_back({sorted[0], t});
sorted = sorted2;
sorted1.clear();
sorted2.clear();
}
sort(mass.begin(), mass.end(), cmp);
for(int i = 0; i < n; i++)
{
for(int j = 0; j < m; j++)
{
int k = A[(i + mass[0].X) % n][(j + mass[0].Y) % m];
if(k == 0)
{
cout << "*";
}
else
{
cout << ".";
}
}
cout << "\n";
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 5 |
Runtime error |
6 ms |
2104 KB |
Execution killed with signal 11 |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 5 |
Runtime error |
6 ms |
2104 KB |
Execution killed with signal 11 |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 2 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 3 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 4 |
Correct |
2 ms |
1100 KB |
Output is correct |
| 5 |
Runtime error |
6 ms |
2104 KB |
Execution killed with signal 11 |
| 6 |
Halted |
0 ms |
0 KB |
- |
