oj.uz

Submission #807412

# Submission time Handle Problem Language Result Execution time Memory
807412 2023-08-04T17:00:20 Z MODDI Nautilus (BOI19_nautilus) C++17
100 / 100
 186 ms 728 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair<int,int> pii;
typedef vector<long long> vl;
typedef vector<int> vi;
int r, c, n;
string str;
bitset<501> sea[501];
bitset<501> dp[2][501];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cin>>r>>c>>n;
	memset(dp, 0, sizeof dp);
	memset(sea, 0, sizeof sea);
	for(int i = 0; i < r; i++){
		string s;
		cin>>s;
		for(int j = 0; j < c; j++){
			if(s[j] == '.'){
				sea[i][j] = 1;
				dp[0][i][j] = 1;
			}
		}
	}
	cin>>str;
	for(int step = 1; step <= n; step++){
		for(int i = 0; i < r; i++){
			dp[step%2][i] = 0;
		}
		for(int i = 0; i < r; i++){
			if (str[step - 1] == 'E' || str[step - 1] == '?') dp[step % 2][i] |= (dp[(step - 1) % 2][i] << 1 & sea[i]);
            if (str[step - 1] == 'W' || str[step - 1] == '?') dp[step % 2][i] |= (dp[(step - 1) % 2][i] >> 1 & sea[i]);
            if ((str[step - 1] == 'S' || str[step - 1] == '?') && i > 0) dp[step % 2][i] |= (dp[(step - 1) % 2][i - 1] & sea[i]);
            if ((str[step - 1] == 'N' || str[step - 1] == '?') && i < n - 1) dp[step % 2][i] |= (dp[(step - 1) % 2][i + 1] & sea[i]);
		}
	}
	ll ans = 0;
	for(int i = 0; i < r; i++){
		ans += dp[n%2][i].count();
	}
	cout<<ans<<endl;
	return 0;
}

Compilation message

nautilus.cpp: In function 'int main()':
nautilus.cpp:19:27: warning: 'void* memset(void*, int, size_t)' clearing an object of non-trivial type 'class std::bitset<501>'; use assignment or value-initialization instead [-Wclass-memaccess]
   19 |  memset(sea, 0, sizeof sea);
      |                           ^
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:66,
                 from nautilus.cpp:1:
/usr/include/c++/10/bitset:751:11: note: 'class std::bitset<501>' declared here
  751 |     class bitset
      |           ^~~~~~

Subtask #1
29.0 / 29.0

# 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 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #2
37.0 / 37.0

# 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 1 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 1 ms 340 KB Output is correct
9 Correct 1 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 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct

Subtask #3
34.0 / 34.0

# 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 1 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 1 ms 340 KB Output is correct
9 Correct 1 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 2 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 111 ms 420 KB Output is correct
23 Correct 107 ms 672 KB Output is correct
24 Correct 105 ms 728 KB Output is correct
25 Correct 110 ms 596 KB Output is correct
26 Correct 106 ms 596 KB Output is correct
27 Correct 148 ms 672 KB Output is correct
28 Correct 150 ms 596 KB Output is correct
29 Correct 147 ms 672 KB Output is correct
30 Correct 144 ms 596 KB Output is correct
31 Correct 144 ms 672 KB Output is correct
32 Correct 172 ms 672 KB Output is correct
33 Correct 180 ms 592 KB Output is correct
34 Correct 186 ms 672 KB Output is correct
35 Correct 171 ms 672 KB Output is correct
36 Correct 173 ms 672 KB Output is correct