#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<str> vstr;
#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define rsz resize
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)
const double EPS = 1e-9;
const int MOD = 1e9+7; // 998244353;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {-1, 0, 1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};
#ifdef DEBUG
#define DBG if(1)
#else
#define DBG if(0)
#endif
#define dbg(x) cout << "(" << #x << " : " << x << ")" << endl;
// ostreams
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "["; REP(i, v.size()) out << v[i] << ", "; out << "]"; return out;}
// istreams
template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }
template<class T, class U>
istream& operator>>(istream& in, pair<T, U> &p){ in >> p.ff >> p.ss; return in; }
//searches
template<typename T, typename U>
T bsl(T lo, T hi, U f){ hi++; T mid; while(lo < hi){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid+1; } return lo; }
template<typename U>
double bsld(double lo, double hi, U f, double p = 1e-9){ int r = 3 + (int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid; } return (lo + hi)/2; }
template<typename T, typename U>
T bsh(T lo, T hi, U f){ lo--; T mid; while(lo < hi){ mid = (lo + hi + 1)/2; f(mid) ? lo = mid : hi = mid-1; } return lo; }
template<typename U>
double bshd(double lo, double hi, U f, double p = 1e-9){ int r = 3+(int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? lo = mid : hi = mid; } return (lo + hi)/2; }
// some more utility functions
template<typename T>
pair<T, int> get_min(vector<T> &v){ typename vector<T> :: iterator it = min_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T>
pair<T, int> get_max(vector<T> &v){ typename vector<T> :: iterator it = max_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T> bool ckmin(T& a, const T& b){return b < a ? a = b , true : false;}
template<typename T> bool ckmax(T& a, const T& b){return b > a ? a = b, true : false;}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
int n, w, h;
cin >> n >> w >> h;
vector<string> grid(h);
cin >> grid;
array<int, 2> nul = {-1, -1};
array<int, 2> nul2 = {-2, -2};
/* array<array<int, 2>, 4> nlll; fill(all(nlll), nul); */
/* vector<vector<array<array<int, 2>, 4>>> nxt(h, vector<array<array<int, 2>, 4>>(w, nlll)); */
/* array<bool, 4> bi = {false, false, false, false}; */
/* vector<vector<array<bool, 4>>> visited(h, vector<array<bool, 4>>(w, bi)); */
array<int, 2> nxt[501][501][4];
REP(i, h) REP(j, w) REP(k, 4) dp[i][j][k] = nul;
bool visited[501][501][4];
REP(i, h) REP(j, w) REP(k, 4) visitd[i][j][k] = false;
function<array<int, 2>(int, int, int)> get_last = [&](int row, int col, int d){
if(grid[row][col] == 'A') d = (d + 3) % 4;
if(grid[row][col] == 'C') d = (d + 1) % 4;
if(nxt[row][col][d] != nul) return nxt[row][col][d];
if(visited[row][col][d]) return nxt[row][col][d] = nul2;
visited[row][col][d] = true;
int ny = row + dy[d]; int nx = col + dx[d];
if(ny < 0 || ny >= h || nx < 0 || nx >= w || grid[ny][nx] == 'x')
return nxt[row][col][d] = {row, col};
else
return nxt[row][col][d] = get_last(ny, nx, d);
};
REP(i, h){
REP(j, w){
if(grid[i][j] == 'x') continue;
REP(k, 4){
get_last(i, j, k);
}
}
}
int dp[501][501][10][10];
//vector<vector<array<array<int, 10>, 10>>> dp(h, vector<array<array<int, 10>, 10>>(w));
//vector<vector<vector<vi>>> dp(h, vector<vector<vi>>(w, vector<vi>(10, vi(10, INF))));
REP(i, h) REP(j, w) REP(k, 10) REP(g, 10) dp[i][j][k][g] = INF;
REP(i, h){
REP(j, w){
if(grid[i][j] > '0' && grid[i][j] <= '9'){
int num = grid[i][j] - '0';
dp[i][j][num][num] = 0;
}
}
}
vector<queue<array<int, 2>>> qv(h * w + 10);
REP(len, n){
FOR(st, 1, n - len + 1, 1){
int en = st + len;
REP(row, h){
REP(col, w){
FOR(mid, st, en, 1){
dp[row][col][st][en] = min(dp[row][col][st][en], dp[row][col][st][mid] + dp[row][col][mid + 1][en]);
}
}
}
REP(ind, qv.size())
while(!qv[ind].empty()) qv[ind].pop();
REP(row, h){
REP(col, w){
if(grid[row][col] == 'x') continue;
if(dp[row][col][st][en] < (int)qv.size())
qv[dp[row][col][st][en]].push({row, col});
}
}
REP(j, (int)qv.size() - 5){
while(!qv[j].empty()){
array<int, 2> v = qv[j].front();
qv[j].pop();
if(dp[v[0]][v[1]][st][en] == j){
REP(dir, 4){
auto nx = nxt[v[0]][v[1]][dir];
if(nx == nul2 || nx == nul) continue;
if(dp[nx[0]][nx[1]][st][en] > j + 1){
dp[nx[0]][nx[1]][st][en] = j + 1;
qv[j + 1].push(nxt[v[0]][v[1]][dir]);
}
}
}
}
}
}
}
int ans = INF;
REP(row, h){
REP(col, w){
ans = min(ans, dp[row][col][1][n]);
}
}
if(ans > 300000){
cout << -1 << "\n";
}
else{
cout << ans << "\n";
}
return 0;
}
Compilation message
robots.cpp: In function 'int main()':
robots.cpp:99:35: error: 'dp' was not declared in this scope; did you mean 'dx'?
99 | REP(i, h) REP(j, w) REP(k, 4) dp[i][j][k] = nul;
| ^~
| dx
robots.cpp:101:35: error: 'visitd' was not declared in this scope; did you mean 'visited'?
101 | REP(i, h) REP(j, w) REP(k, 4) visitd[i][j][k] = false;
| ^~~~~~
| visited
robots.cpp:26:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::queue<std::array<int, 2> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | #define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
| ^
robots.cpp:28:18: note: in expansion of macro 'FOR'
28 | #define REP(i,b) FOR(i,0,b,1)
| ^~~
robots.cpp:145:13: note: in expansion of macro 'REP'
145 | REP(ind, qv.size())
| ^~~
