#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define all(a) (a).begin(), (a).end()
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef long double ld;
template<typename T1, typename T2> bool chkmin(T1 &x, T2 y) { return y < x ? (x = y, true) : false; }
template<typename T1, typename T2> bool chkmax(T1 &x, T2 y) { return y > x ? (x = y, true) : false; }
void debug_out()
{
cerr << endl;
}
template<typename T1, typename... T2> void debug_out(T1 A, T2... B)
{
cerr << ' ' << A;
debug_out(B...);
}
#ifdef DEBUG
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif
const int maxN = 502;
int n, m, k;
bool grid[maxN][maxN];
bool dp[2][maxN][maxN];
int dx[256], dy[256];
bool valid(int x, int y)
{
return 0 <= x && x < n && 0 <= y && y < m;
}
signed main()
{
#ifdef DEBUG
freopen("in", "r", stdin);
#endif
ios::sync_with_stdio(0);
cin.tie(0);
dx['N'] = 1;
dy['N'] = 0;
dx['S'] = -1;
dy['S'] = 0;
dx['W'] = 0;
dy['W'] = 1;
dx['E'] = 0;
dy['E'] = -1;
cin >> n >> m >> k;
for (int i = 0; i < n; ++i)
{
string s;
cin >> s;
for (int j = 0; j < m; ++j)
{
grid[i][j] = s[j] == '.';
}
}
memcpy(dp[0], grid, sizeof(grid));
string I;
cin >> I;
for (int l = 1; l <= k; ++l)
{
char c = I[l - 1];
memset(dp[l & 1], 0, sizeof(dp[l & 1]));
for (int i = 0; i < n; ++i)
{
for (int j = 0; j < m; ++j)
{
if (!grid[i][j]) continue;
if (c != '?')
{
int x = i + dx[c];
int y = j + dy[c];
if (valid(x, y) && grid[x][y] && dp[l & 1 ^ 1][x][y])
{
dp[l & 1][i][j] = true;
}
}
else
{
for (char _c : {'N', 'S', 'W', 'E'})
{
int x = i + dx[_c];
int y = j + dy[_c];
if (valid(x, y) && grid[x][y] && dp[l & 1 ^ 1][x][y])
{
dp[l & 1][i][j] = true;
}
}
}
}
}
}
int ans = 0;
for (int i = 0; i < n; ++i)
for (int j = 0; j < m; ++j)
if (dp[k & 1][i][j])
++ans;
cout << ans << '\n';
return 0;
}
Compilation message
nautilus.cpp: In function 'int main()':
nautilus.cpp:90:37: warning: array subscript has type 'char' [-Wchar-subscripts]
int x = i + dx[c];
^
nautilus.cpp:91:37: warning: array subscript has type 'char' [-Wchar-subscripts]
int y = j + dy[c];
^
nautilus.cpp:92:59: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
if (valid(x, y) && grid[x][y] && dp[l & 1 ^ 1][x][y])
~~^~~
nautilus.cpp:101:42: warning: array subscript has type 'char' [-Wchar-subscripts]
int x = i + dx[_c];
^
nautilus.cpp:102:42: warning: array subscript has type 'char' [-Wchar-subscripts]
int y = j + dy[_c];
^
nautilus.cpp:103:63: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
if (valid(x, y) && grid[x][y] && dp[l & 1 ^ 1][x][y])
~~^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
896 KB |
Output is correct |
| 2 |
Correct |
12 ms |
896 KB |
Output is correct |
| 3 |
Correct |
14 ms |
896 KB |
Output is correct |
| 4 |
Correct |
13 ms |
896 KB |
Output is correct |
| 5 |
Correct |
10 ms |
896 KB |
Output is correct |
| 6 |
Correct |
7 ms |
896 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
896 KB |
Output is correct |
| 2 |
Correct |
12 ms |
896 KB |
Output is correct |
| 3 |
Correct |
14 ms |
896 KB |
Output is correct |
| 4 |
Correct |
13 ms |
896 KB |
Output is correct |
| 5 |
Correct |
10 ms |
896 KB |
Output is correct |
| 6 |
Correct |
7 ms |
896 KB |
Output is correct |
| 7 |
Correct |
13 ms |
896 KB |
Output is correct |
| 8 |
Correct |
20 ms |
896 KB |
Output is correct |
| 9 |
Correct |
18 ms |
896 KB |
Output is correct |
| 10 |
Correct |
11 ms |
896 KB |
Output is correct |
| 11 |
Correct |
7 ms |
896 KB |
Output is correct |
| 12 |
Correct |
18 ms |
896 KB |
Output is correct |
| 13 |
Correct |
24 ms |
896 KB |
Output is correct |
| 14 |
Correct |
25 ms |
896 KB |
Output is correct |
| 15 |
Correct |
12 ms |
896 KB |
Output is correct |
| 16 |
Correct |
7 ms |
896 KB |
Output is correct |
| 17 |
Correct |
22 ms |
896 KB |
Output is correct |
| 18 |
Correct |
25 ms |
896 KB |
Output is correct |
| 19 |
Correct |
21 ms |
896 KB |
Output is correct |
| 20 |
Correct |
12 ms |
896 KB |
Output is correct |
| 21 |
Correct |
9 ms |
896 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
10 ms |
896 KB |
Output is correct |
| 2 |
Correct |
12 ms |
896 KB |
Output is correct |
| 3 |
Correct |
14 ms |
896 KB |
Output is correct |
| 4 |
Correct |
13 ms |
896 KB |
Output is correct |
| 5 |
Correct |
10 ms |
896 KB |
Output is correct |
| 6 |
Correct |
7 ms |
896 KB |
Output is correct |
| 7 |
Correct |
13 ms |
896 KB |
Output is correct |
| 8 |
Correct |
20 ms |
896 KB |
Output is correct |
| 9 |
Correct |
18 ms |
896 KB |
Output is correct |
| 10 |
Correct |
11 ms |
896 KB |
Output is correct |
| 11 |
Correct |
7 ms |
896 KB |
Output is correct |
| 12 |
Correct |
18 ms |
896 KB |
Output is correct |
| 13 |
Correct |
24 ms |
896 KB |
Output is correct |
| 14 |
Correct |
25 ms |
896 KB |
Output is correct |
| 15 |
Correct |
12 ms |
896 KB |
Output is correct |
| 16 |
Correct |
7 ms |
896 KB |
Output is correct |
| 17 |
Correct |
22 ms |
896 KB |
Output is correct |
| 18 |
Correct |
25 ms |
896 KB |
Output is correct |
| 19 |
Correct |
21 ms |
896 KB |
Output is correct |
| 20 |
Correct |
12 ms |
896 KB |
Output is correct |
| 21 |
Correct |
9 ms |
896 KB |
Output is correct |
| 22 |
Execution timed out |
1083 ms |
1280 KB |
Time limit exceeded |
| 23 |
Halted |
0 ms |
0 KB |
- |
