#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#ifdef U_U
#include "algo/debug.h"
#else
#define deb(x...) 42
#endif
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define pb push_back
#define szof(x) (int)x.size()
#define int ll
#define love bool
template<class T> void MIN(T& a, const T b) { b < a ? a = b, 1 : 0; }
template<class T> void MAX(T& a, const T b) { a < b ? a = b, 1 : 0; }
const int mod = 1e9 + 7;
const int N = 2e5 + 5;
const int inf = 2147483647;
const int INF = 9223372036854775807;
const int dx[] = {1, -1, 0, 0};
const int dy[] = {0, 0, 1, -1};
// Follow the white rabbit.
int n, w, h;
char e[505][505];
int dist[505][505];
bool check (int i, int j) {
if (i > h || i < 1 || j > w || j < 1 || e[i][j] == 'x') return 0;
return 1;
}
void ka () {
cin >> n >> w >> h;
pair <int, int> first = {0ll, 0ll}, second;
for (int i = 1; i <= h; i ++) {
for (int j = 1; j <= w; j ++) {
cin >> e[i][j];
if (e[i][j] >= '1' && e[i][j] <= '9') {
if (first == make_pair(0ll, 0ll)) first = make_pair(i, j);
else second = {i, j};
}
}
}
if (first.first > second.first) swap(first, second);
if (first.first != 1ll || second.first != 2ll) cout << -1;
else {
queue <pair <int, int> > q;
q.push(first);
for (int i = 1; i <= h; i ++) for (int j = 1; j <= w; j ++) dist[i][j] = inf;
dist[first.first][first.second] = 0;
while (szof(q)) {
pair <int, int> v = q.front();
q.pop();
for (int k = 0; k < 4; k ++) {
int x = v.first, y = v.second;
while (check(x, y)) {
if (!check(x + dx[k], y + dy[k])) {
if (dist[x][y] > dist[v.first][v.second] + 1) {
dist[x][y] = dist[v.first][v.second] + 1;
q.push({x, y});
}
break;
}
x += dx[k], y += dy[k];
}
}
}
cout << (dist[second.first][second.second] == inf ? -1 : dist[second.first][second.second]);
}
}
const bool overflow = 0;
main() {
//freopen("haircut.in" , "r", stdin); freopen("haircut.out", "w", stdout);
cout.setf(ios::fixed);cout.precision(12);
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int tc = 1;
if (overflow) cin >> tc;
for (int cs = 1; cs <= tc; cs ++) {
#ifdef U_U
cout << ":D\n";
#endif
ka();
//if (cs != tc) cout << '\n';
}
}
Compilation message
robots.cpp:78:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
78 | main() {
| ^~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
