#include <bits/stdc++.h>
#GCC pragma optimize("0fast, unroll-loops")
using namespace std;
int32_t main() {
int n, m, K, ans = 0;
cin >> n >> m >> K;
char mat[n][m];
for(int i=0; i<n; i++)
for(int j=0; j<m; j++) cin >> mat[i][j];
string s;
cin >> s;
s = "." + s;
bool dp[2][n][m];
memset(dp, 0, sizeof(dp));
for(int i=0; i<n; i++)
for(int j=0; j<m; j++) dp[0][i][j] = (mat[i][j] == '.');
for(int i=1; i<=K; i++) {
for(int r=0; r<n; r++) {
for(int c=0; c<m; c++) {
dp[1][r][c] = 0;
if(mat[r][c] == '#') continue;
if((s[i] == 'W' || s[i] == '?') && c + 1 < m && dp[0][r][c+1]) dp[1][r][c] = 1;
if((s[i] == 'E' || s[i] == '?') && c - 1 >= 0 && dp[0][r][c-1]) dp[1][r][c] = 1;
if((s[i] == 'N' || s[i] == '?') && r + 1 < n && dp[0][r+1][c]) dp[1][r][c] = 1;
if((s[i] == 'S' || s[i] == '?') && r - 1 >= 0 && dp[0][r-1][c]) dp[1][r][c] = 1;
}
}
for(int r=0; r<n; r++)
for(int c=0; c<m; c++) dp[0][r][c] = dp[1][r][c];
}
for(int i=0; i<n; i++)
for(int j=0; j<m; j++) ans += dp[0][i][j];
cout << ans << '\n';
return 0;
}
Compilation message
nautilus.cpp:2:2: error: invalid preprocessing directive #GCC
2 | #GCC pragma optimize("0fast, unroll-loops")
| ^~~
