#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace __gnu_pbds;
using namespace std;
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long ll;
typedef long double ld;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
ll r,c,m;
cin >> r >> c >> m;
vector <string> grid(r);
for (int z=0;z<r;z++){
cin >> grid[z];
}
string signal;
cin >> signal;
bitset<500> dp[m+1][r];
bitset<500> g[r];
for (int j=0;j<r;j++){
for (int k=0;k<c;k++){
if (grid[j][k] == '#') {g[j][k] = 0; dp[0][j][k] = 0;}
else {g[j][k] = 1 ; dp[0][j][k] = 1;}
}
}
for (int i=1;i<=m;i++){
char now = signal[i-1];
for (int j=0;j<r;j++){
if (now == 'W') {
dp[i][j] = dp[i-1][j] >> 1 & g[j];
}
if (now == 'E') {
dp[i][j] = dp[i-1][j] << 1 & g[j];
}
if (now == 'S' && j > 0){
dp[i][j] = dp[i-1][j-1] & g[j];
}
if (now == 'N' && j < r-1){
dp[i][j] = dp[i-1][j+1] & g[j];
}
if (now == '?'){
if (j > 0) dp[i][j-1] |= (dp[i-1][j] | dp[i][j-1]) & g[j-1];
if (j < r-1) dp[i][j+1] |= (dp[i-1][j] | dp[i][j+1]) & g[j+1];
dp[i][j] |= (dp[i-1][j]<< 1) | (dp[i-1][j] >> 1) & g[j];
dp[i][j] &= g[j];
}
}
}
ll ans = 0;
for (int z=0;z<r;z++){
for (int x=0;x<c;x++){
if (dp[m][z][x]) ans++;
}
}
cout << ans << endl;
}
Compilation message
nautilus.cpp: In function 'int main()':
nautilus.cpp:53:54: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses]
dp[i][j] |= (dp[i-1][j]<< 1) | (dp[i-1][j] >> 1) & g[j];
~~~~~~~~~~~~~~~~~~^~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1016 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 14 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 15 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 16 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1016 KB |
Output is correct |
| 21 |
Correct |
4 ms |
1016 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 4 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 14 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 15 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 16 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1016 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1016 KB |
Output is correct |
| 21 |
Correct |
4 ms |
1016 KB |
Output is correct |
| 22 |
Correct |
216 ms |
157452 KB |
Output is correct |
| 23 |
Correct |
271 ms |
157524 KB |
Output is correct |
| 24 |
Correct |
242 ms |
157488 KB |
Output is correct |
| 25 |
Correct |
230 ms |
157560 KB |
Output is correct |
| 26 |
Correct |
222 ms |
157520 KB |
Output is correct |
| 27 |
Correct |
244 ms |
157408 KB |
Output is correct |
| 28 |
Correct |
246 ms |
157500 KB |
Output is correct |
| 29 |
Correct |
247 ms |
157432 KB |
Output is correct |
| 30 |
Correct |
245 ms |
157544 KB |
Output is correct |
| 31 |
Correct |
250 ms |
157564 KB |
Output is correct |
| 32 |
Correct |
265 ms |
157560 KB |
Output is correct |
| 33 |
Correct |
269 ms |
157432 KB |
Output is correct |
| 34 |
Correct |
269 ms |
157568 KB |
Output is correct |
| 35 |
Correct |
268 ms |
157532 KB |
Output is correct |
| 36 |
Correct |
269 ms |
157536 KB |
Output is correct |
