#include <iostream>
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 510;
bool blocked[MAXN][MAXN];
int dp[MAXN][MAXN][12][12];
bool cw[MAXN][MAXN];
bool anticw[MAXN][MAXN];
vector<pair<int,int>> res[MAXN*MAXN + 2];
int n,h,w;
int dx[6] = {0,0,1,0,-1};
int dy[6] = {0,1,0,-1,0};
priority_queue<pair<int,pair<int,int>>> pq;
pair<int,int> visited[MAXN][MAXN][5];
pair<int,int> bot[20];
bool check(int i,int j){
if(i<=0||j<=0||i>w||j>h||blocked[i][j]){
return false;
}
return true;
}
pair<int,int> dfs(int i,int j,int dir){
if(visited[i][j][dir]!=make_pair(0,0)){
return visited[i][j][dir];
}
if(!anticw[i][j] && !cw[i][j]){
int nexti = i+dx[dir];
int nextj = j+dy[dir];
if(check(nexti,nextj)){
return visited[i][j][dir] = dfs(nexti,nextj,dir);
}else{
return make_pair(i,j);
}
}
if(anticw[i][j]){
int newdir = dir;
newdir--;
if(newdir == 0){
newdir = 4;
}
int nexti = i+dx[newdir];
int nextj = j+dy[newdir];
if(check(nexti,nextj)){
return visited[i][j][dir] = dfs(nexti,nextj,newdir);
}else{
return make_pair(i,j);
}
}
if(cw[i][j]){
int newdir = dir;
newdir++;
if(newdir == 5){
newdir = 1;
}
int nexti = i+dx[newdir];
int nextj = j+dy[newdir];
if(check(nexti,nextj)){
return visited[i][j][dir] = dfs(nexti,nextj,newdir);
}else{
return make_pair(i,j);
}
}
return make_pair(0,0);
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin>>n>>w>>h;
swap(w,h);
int mx = h*w;
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
char x;
cin>>x;
if(x=='.'){
continue;
}
if(x=='x'){
blocked[i][j] = true;
continue;
}
if(x=='A'){
anticw[i][j] = true;
continue;
}
if(x=='C'){
cw[i][j] = true;
continue;
}
int y = x-'0';
bot[y] = make_pair(i,j);
}
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
for(int x=1;x<=n;x++){
for(int y=1;y<=n;y++){
dp[i][j][x][y] = 1e9;
}
}
}
}
for(int i=1;i<=n;i++){
dp[bot[i].first][bot[i].second][i][i] = 0;
// cout<<i<<" "<<bot[i].first<<" "<<bot[i].second<<endl;
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
if(blocked[i][j]){
continue;
}
if(visited[i][j][1]== make_pair(0,0)){
dfs(i,j,1);
}
if(visited[i][j][2]== make_pair(0,0)){
dfs(i,j,2);
}
if(visited[i][j][3]== make_pair(0,0)){
dfs(i,j,3);
}
if(visited[i][j][4]== make_pair(0,0)){
dfs(i,j,4);
}
}
}
//cout<<visited[5][5][1].first<<" "<<visited[5][5][1].second<<endl;
for(int len=0;len<=n-1;len++){
for(int x=1;x<=n;x++){
int y = x+len;
if(y>n){
break;
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
for(int z=x;z<y;z++){
if(i==1 && j==1 && x==1 && y==4 && z==2){
//cout<<dp[i][j][z+1][y]<<endl;
}
dp[i][j][x][y] = min(dp[i][j][x][y],dp[i][j][x][z]+dp[i][j][z+1][y]);
}
}
}
while(pq.size()){
pq.pop();
}
for(int i=0;i<=w*h;i++){
if(res[i].size()){
res[i].clear();
}
}
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
if(dp[i][j][x][y]!=1e9){
res[dp[i][j][x][y]].push_back(make_pair(i,j));
}
}
}
for(int i=0;i<=w*h;i++){
for(auto tmp:res[i]){
int a = tmp.first;
int b = tmp.second;
for(int dir=1;dir<=4;dir++){
int nxti = visited[a][b][dir].first;
int nxtj = visited[a][b][dir].second;
if(nxti == a && nxtj == b){
continue;
}
if(nxti == 0 && nxtj == 0){
continue;
}
if(dp[nxti][nxtj][x][y]>i+1){
dp[nxti][nxtj][x][y] = i+1;
res[i+1].push_back(make_pair(nxti,nxtj));
}
}
}
}
while(!pq.empty()){
auto hold = pq.top().second;
if(dp[hold.first][hold.second][x][y] !=pq.top().first){
pq.pop();
continue;
}
pq.pop();
for(int dir=1;dir<=4;dir++){
int nxti = visited[hold.first][hold.second][dir].first;
int nxtj = visited[hold.first][hold.second][dir].second;
if(nxti == hold.first && nxtj == hold.second){
continue;
}
if(nxti == 0 && nxtj == 0){
continue;
}
if(dp[nxti][nxtj][x][y]>dp[hold.first][hold.second][x][y]+1){
dp[nxti][nxtj][x][y] = dp[hold.first][hold.second][x][y]+1;
pq.push(make_pair(dp[nxti][nxtj][x][y],make_pair(nxti,nxtj)));
}
}
}
}
}
//cout<<visited[1][7][3].first<<" "<<visited[1][7][3].second<<endl;
// cout<<dp[1][7][3][4]<<endl;
int ans = 1e9;
for(int i=1;i<=w;i++){
for(int j=1;j<=h;j++){
ans = min(ans,dp[i][j][1][n]);
}
}
if(ans == 1e9){
ans = -1;
}
cout<<ans<<'\n';
}
Compilation message
robots.cpp: In function 'int main()':
robots.cpp:78:9: warning: unused variable 'mx' [-Wunused-variable]
int mx = h*w;
^~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 2 |
Correct |
6 ms |
6400 KB |
Output is correct |
| 3 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 4 |
Correct |
6 ms |
6656 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6528 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 2 |
Correct |
6 ms |
6400 KB |
Output is correct |
| 3 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 4 |
Correct |
6 ms |
6656 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 6 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 7 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 9 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 10 |
Correct |
6 ms |
6784 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 2 |
Correct |
6 ms |
6400 KB |
Output is correct |
| 3 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 4 |
Correct |
6 ms |
6656 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 6 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 7 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 9 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 10 |
Correct |
6 ms |
6784 KB |
Output is correct |
| 11 |
Correct |
388 ms |
65272 KB |
Output is correct |
| 12 |
Correct |
49 ms |
61688 KB |
Output is correct |
| 13 |
Correct |
192 ms |
63352 KB |
Output is correct |
| 14 |
Correct |
664 ms |
70720 KB |
Output is correct |
| 15 |
Correct |
332 ms |
62456 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
6400 KB |
Output is correct |
| 2 |
Correct |
6 ms |
6400 KB |
Output is correct |
| 3 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 4 |
Correct |
6 ms |
6656 KB |
Output is correct |
| 5 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 6 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 7 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 8 |
Correct |
5 ms |
6528 KB |
Output is correct |
| 9 |
Correct |
6 ms |
6528 KB |
Output is correct |
| 10 |
Correct |
6 ms |
6784 KB |
Output is correct |
| 11 |
Correct |
388 ms |
65272 KB |
Output is correct |
| 12 |
Correct |
49 ms |
61688 KB |
Output is correct |
| 13 |
Correct |
192 ms |
63352 KB |
Output is correct |
| 14 |
Correct |
664 ms |
70720 KB |
Output is correct |
| 15 |
Correct |
332 ms |
62456 KB |
Output is correct |
| 16 |
Correct |
864 ms |
160164 KB |
Output is correct |
| 17 |
Runtime error |
371 ms |
163844 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 18 |
Halted |
0 ms |
0 KB |
- |
