/*
\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /
\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //
/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \
\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /
/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \
\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /
/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \
\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /
// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\
/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \
\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /\ \//\\//\\/ /
\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //\\ \//\\/ //
/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \
\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /
/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \/ \//\\/ \
\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /\ /\\//\ /
/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \/ / \/ \ \
\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /\ / /\ \ /
// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\// /\\//\ \\
/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \/ /\\//\\//\ \
*/
#include <bits/stdc++.h>
#define fore(i, a, b) for (int i = (a), i##_last = (b); i < i##_last; ++i)
#define fort(i, a, b) for (int i = (a), i##_last = (b); i <= i##_last; ++i)
#define ford(i, a, b) for (int i = (a), i##_last = (b); i >= i##_last; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
using namespace std;
using ll = long long;
using ld = long double;
template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};
typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
#define maxR 105
#define maxC 105
const int inf = 0X3F3F3F3F;
const short directions[4][2] = {{-1, 0}, {0, 1}, {1, 0}, {0, -1}};
const string ways = "^>v<", NESW = "NESW";
int r, c, shortestPath = inf;
string sea[maxR];
char result;
int DP(int x, int y) {
static vvi dp(maxR, vi(maxC, -1));
if (dp[x][y] < 0) {
switch (sea[x][y]) {
case 'x':
dp[x][y] = 0;
break;
case 'o':
case '.':
dp[x][y] = inf;
break;
default:
dp[x][y] = inf;
fore(d, 0, 4)
if (ways[d] == sea[x][y]) {
mini(dp[x][y], DP(x + directions[d][0], y + directions[d][1]) + 1);
break;
}
}
}
return dp[x][y];
}
int main() {
int x = -1, y = -1;
#ifdef LOCAL
freopen("input.INP", "r", stdin);
#endif // LOCAL
cin.tie(0) -> sync_with_stdio(0);
cout.tie(0);
cin >> r >> c;
fore(i, 0, r) {
cin >> sea[i];
if (x < 0) {
fore(j, 0, c)
if (sea[i][j] == 'o') {
x = i;
y = j;
break;
}
}
}
fore(d, 0, 4) {
if (mini(shortestPath, DP(x + directions[d][0], y + directions[d][1]) + 1))
result = NESW[d];
if (shortestPath == DP(x + directions[d][0], y + directions[d][1]) + 1)
mini(result, NESW[d]);
}
if (shortestPath >= inf)
puts(":(");
else
cout << ":)\n" << result << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 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 |
0 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
340 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
1 ms |
340 KB |
Output is correct |
| 18 |
Correct |
0 ms |
340 KB |
Output is correct |
| 19 |
Correct |
0 ms |
324 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
