#include <bits/stdc++.h>
using namespace std;
typedef pair <short, short> pr;
int k, n, m, a[501][501][45], nr;
char c[501][501];
int key[9][9];
bool STOP;
const int inf = 1000000000;
pr go[4][600][600];
int poz[501][501][9][9] = { 0 };
class heap {
private:
int sz;
struct nod {
int i, j;
unsigned l, r;
bool operator < (nod& aux)
{
return a[i][j][key[l][r]] < a[aux.i][aux.j][key[aux.l][aux.l]];
}
};
nod* h;
void up(int k)
{
while (k > 1)
{
int k2 = k / 2;
if (h[k] < h[k2])
{
swap(poz[h[k].i][h[k].j][h[k].l][h[k].r], poz[h[k2].i][h[k2].j][h[k2].l][h[k2].r]);
swap(h[k], h[k2]), k = k2;
}
else
break;
}
}
void down(int k)
{
while (2 * k <= sz)
{
int k2 = 2 * k;
if (k2 + 1 <= sz && h[k2 + 1] < h[k2])
k2++;
if (h[k2] < h[k])
{
swap(poz[h[k].i][h[k].j][h[k].l][h[k].r], poz[h[k2].i][h[k2].j][h[k2].l][h[k2].r]);
swap(h[k], h[k2]), k = k2;
}
else
break;
}
}
public:
heap()
{
sz = 0;
h = new nod[300001];
}
void add(nod x)
{
sz++;
h[sz] = x;
poz[x.i][x.j][x.l][x.r] = sz;
up(sz);
}
void pop()
{
swap(h[1], h[sz]);
swap(poz[h[1].i][h[1].j][h[1].l][h[1].r], poz[h[sz].i][h[sz].j][h[sz].l][h[sz].r]);
poz[h[sz].i][h[sz].j][h[sz].l][h[sz].r] = 0;
sz--;
down(1);
}
void update(nod x)
{
if (!poz[x.i][x.j][x.l][x.r])
add(x);
else
{
up(poz[x.i][x.j][x.l][x.r]);
down(poz[x.i][x.j][x.l][x.r]);
}
}
nod top()
{
return h[1];
}
bool empty()
{
return sz == 0;
}
};
void afis(pr aux)
{
cout << aux.first << ' ' << aux.second << '\n';
}
// 0 - Up, 1 - Left, 2 - Down, 3 - Right
int d1[] = { -1, 0, 1, 0 };
int d2[] = { 0, 1, 0, -1 };
inline bool in(short& i, short& j)
{
return i >= 1 && i <= n && j >= 1 && j <= m;
}
inline void prev(int& dir)
{
dir--;
if (dir == -1)
dir = 3;
}
inline void next(int& dir)
{
dir++;
if (dir == 4)
dir = 0;
}
int nxDir;
pr get(int dir, short i, short j)
{
if (!in(i, j) || c[i][j] == 'x')
{
next(dir);
next(dir);
return { i + d1[dir], j + d2[dir] };
}
if (go[dir][i][j].first)
return go[dir][i][j];
if (nr == 1000000)
{
STOP = 1;
return { 0, 0 };
}
nr++;
nxDir = dir;
if (c[i][j] == 'A')
prev(nxDir);
else if (c[i][j] == 'C')
next(nxDir);
pr aux = get(nxDir, i + d1[nxDir], j + d2[nxDir]);
go[dir][i][j] = aux;
return aux;
}
inline bool digit(char& c)
{
return c >= '0' && c <= '9';
}
bool update(pr p, int val, int& l, int& r)
{
if (a[p.first][p.second][key[l][r]] > val)
{
a[p.first][p.second][key[l][r]] = val;
return 1;
}
return 0;
}
heap H;
void lee()
{
int l, r, i, j, x, y;
while (!H.empty())
{
i = H.top().i;
j = H.top().j;
l = H.top().l;
r = H.top().r;
H.pop();
for (int p = 0; p <= 3; p++)
{
x = go[p][i][j].first;
y = go[p][i][j].second;
if (update({ x, y }, a[i][j][key[l][r]] + 1, l, r))
H.update({ x, y, unsigned(l), unsigned(r)});
}
}
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cin >> k >> m >> n;
int cnt = 0;
for (int i = 0; i < k; i++)
for (int j = i; j < k; j++)
key[i][j] = cnt++;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
{
for (int l = 0; l < k; l++)
for (int p = l; p < k; p++)
a[i][j][key[l][p]] = inf;
cin >> c[i][j];
if (digit(c[i][j]))
c[i][j]--;
}
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
for (int l = 0; l <= 3; l++)
{
nr = 0;
get(l, i, j);
if (STOP)
return 0;
}
int aux;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
if (digit(c[i][j]))
{
aux = (c[i][j] - '0');
update({ i, j }, 0, aux, aux);
H.add({ i, j, unsigned(aux), unsigned(aux) });
lee();
}
int q;
for (int l = 2; l <= k; l++)
for (int p = 0; p < k - l + 1; p++)
{
q = p + l - 1;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
{
for (int t = p; t < q; t++)
update({ i, j }, a[i][j][key[p][t]] + a[i][j][key[t + 1][q]], p, q);
H.add({ i, j, unsigned(p), unsigned(q)});
}
lee();
}
int mini = inf;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++)
mini = min(mini, a[i][j][key[0][k - 1]]);
if (mini == inf)
cout << -1;
else
cout << mini;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
596 KB |
Output is correct |
| 5 |
Correct |
0 ms |
596 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
596 KB |
Output is correct |
| 5 |
Correct |
0 ms |
596 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 |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
596 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
596 KB |
Output is correct |
| 5 |
Correct |
0 ms |
596 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 |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
596 KB |
Output is correct |
| 11 |
Execution timed out |
1572 ms |
50676 KB |
Time limit exceeded |
| 12 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
596 KB |
Output is correct |
| 5 |
Correct |
0 ms |
596 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 |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
596 KB |
Output is correct |
| 11 |
Execution timed out |
1572 ms |
50676 KB |
Time limit exceeded |
| 12 |
Halted |
0 ms |
0 KB |
- |
