#include <bits/stdc++.h>
using namespace std;
const int N = 9, W = 500;
int dp[N][N][W][W], pt[W][W], nxt[W][W][5];
vector<int> adj[W * W];
bool explored[W][W][5];
string a[W];
int n, w, h;
int dy[] = {0, 1, 0, -1, 0};
int dx[] = {0, 0, 1, 0, -1};
bool check(int i, int j) {
if (i < 0 || j < 0 || i >= h || j >= w || a[i][j] == 'x')
return false;
return true;
}
int dfs(int i, int j, int dir) {
if (explored[i][j][dir])
return nxt[i][j][dir];
explored[i][j][dir] = true;
nxt[i][j][dir] = pt[i][j];
if (a[i][j] != 'A' && a[i][j] != 'C' && a[i][j] != 'x') {
if (check(i + dx[dir], j + dy[dir]))
return nxt[i][j][dir] = dfs(i + dx[dir], j + dy[dir], dir);
else
return nxt[i][j][dir] = pt[i][j];
}
if (a[i][j] == 'C') {
int nd = dir + 1;
if (nd == 5)
nd = 1;
if (check(i + dx[nd], j + dy[nd]))
return nxt[i][j][dir] = dfs(i + dx[nd], j + dy[nd], nd);
else
return nxt[i][j][dir] = pt[i][j];
}
if (a[i][j] == 'A') {
int nd = dir - 1;
if (nd == 0)
nd = 4;
if (check(i + dx[nd], j + dy[nd]))
return nxt[i][j][dir] = dfs(i + dx[nd], j + dy[nd], nd);
else
return nxt[i][j][dir] = pt[i][j];
}
return -1;
}
void dijkstra(int i, int j) {
priority_queue<pair<int, int>, vector<pair<int, int>>, decltype(greater<>())> pq;
bool explored[w * h] = {};
for (int k = 0; k < h; k++) {
for (int l = 0; l < w; l++)
if (a[k][l] != 'x')
pq.push({dp[i][j][k][l], pt[k][l]});
}
while (!pq.empty()) {
auto temp = pq.top();
int d = temp.first, v = temp.second;
pq.pop();
if (explored[v])
continue;
explored[v] = true;
for (int k : adj[v]) {
if (dp[i][j][k / w][k % w] > d + 1)
dp[i][j][k / w][k % w] = d + 1, pq.push({d + 1, k});
}
}
}
int solveTestCase() {
cin >> n >> w >> h;
for (int i = 0; i < h; i++) cin >> a[i];
for (int i = 0; i < h; i++){
for (int j = 0; j < w; j++)
pt[i][j] = w * i + j;
}
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (!explored[i][j][1])
dfs(i, j, 1);
if (!explored[i][j][2])
dfs(i, j, 2);
if (!explored[i][j][3])
dfs(i, j, 3);
if (!explored[i][j][4])
dfs(i, j, 4);
adj[pt[i][j]].push_back(nxt[i][j][1]);
adj[pt[i][j]].push_back(nxt[i][j][2]);
adj[pt[i][j]].push_back(nxt[i][j][3]);
adj[pt[i][j]].push_back(nxt[i][j][4]);
}
}
cerr << check(0 + dx[3], 0 + dy[3]) << "\n";
cerr << nxt[0][0][1] << " " << nxt[0][0][2] << " " << nxt[0][0][3] << " " << nxt[0][0][4] << "\n";
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
for (int k = 0; k < h; k++) {
for (int l = 0; l < w; l++)
dp[i][j][k][l] = 1e9;
}
}
}
for (int i = 0; i < n; i++) {
for (int k = 0; k < h; k++) {
for (int l = 0; l < w; l++) {
if (a[k][l] - '0' == i + 1)
dp[i][i][k][l] = 0;
}
}
dijkstra(i, i);
}
for (int k = 0; k < h; k++) {
for (int l = 0; l < w; l++)
cerr << dp[0][0][k][l] << " ";
cerr << "\n";
}
for (int dif = 1; dif < n; dif++) {
for (int i = 0; i < n; i++) {
int j = i + dif;
if (j >= n)
continue;
for (int x = i; x < j; x++) {
for (int k = 0; k < h; k++) {
for (int l = 0; l < w; l++)
dp[i][j][k][l] = min(dp[i][j][k][l], dp[i][x][k][l] + dp[x + 1][j][k][l]);
}
}
dijkstra(i, j);
}
}
int ans = 1e9;
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++)
ans = min(ans, dp[0][n - 1][i][j]);
}
cout << (ans == 1e9 ? -1 : ans);
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int t = 1;
//cin >> t;
while (t--)
solveTestCase();
}
Compilation message
robots.cpp: In function 'int solveTestCase()':
robots.cpp:164:1: warning: no return statement in function returning non-void [-Wreturn-type]
}
^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6400 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 6 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 7 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6272 KB |
Output is correct |
| 9 |
Correct |
5 ms |
6272 KB |
Output is correct |
| 10 |
Correct |
5 ms |
6400 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 6 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 7 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6272 KB |
Output is correct |
| 9 |
Correct |
5 ms |
6272 KB |
Output is correct |
| 10 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 11 |
Correct |
801 ms |
62828 KB |
Output is correct |
| 12 |
Correct |
411 ms |
14992 KB |
Output is correct |
| 13 |
Correct |
619 ms |
44592 KB |
Output is correct |
| 14 |
Correct |
1084 ms |
62820 KB |
Output is correct |
| 15 |
Correct |
758 ms |
62952 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 6 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 7 |
Correct |
4 ms |
6272 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6272 KB |
Output is correct |
| 9 |
Correct |
5 ms |
6272 KB |
Output is correct |
| 10 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 11 |
Correct |
801 ms |
62828 KB |
Output is correct |
| 12 |
Correct |
411 ms |
14992 KB |
Output is correct |
| 13 |
Correct |
619 ms |
44592 KB |
Output is correct |
| 14 |
Correct |
1084 ms |
62820 KB |
Output is correct |
| 15 |
Correct |
758 ms |
62952 KB |
Output is correct |
| 16 |
Execution timed out |
1591 ms |
108396 KB |
Time limit exceeded |
| 17 |
Halted |
0 ms |
0 KB |
- |
