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Submission #712014

# Submission time Handle Problem Language Result Execution time Memory
712014 2023-03-18T00:17:05 Z Lobo Nautilus (BOI19_nautilus) C++17
100 / 100
 162 ms 704 KB 
#include<bits/stdc++.h>
using namespace std;
const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
const int maxn = 550;

int r,c,m;
bitset<maxn> dp[2][maxn], a[maxn];
vector<pair<int,int>> adj = {mp(0,-1),mp(0,1),mp(1,0),mp(-1,0)};

void solve() {
    cin >> r >> c >> m;
    
    for(int i = 0; i < r; i++) {
        string s; cin >> s;
        for(int j = 0; j < c; j++) {
            if(s[j] == '.') a[i+1][j+1] = 1;
        }
    }

    string s; cin >> s;
    for(int i = 1; i <= r; i++) {
        for(int j = 1; j <= c; j++) {
            dp[0][i][j] = a[i][j];
        }
    }

    for(int k = 1; k <= m; k++) {
        for(int i = 1; i <= r; i++) {
            if(s[k-1] == '?') {
                dp[k&1][i] = a[i]&((dp[k&1^1][i]>>1)|(dp[k&1^1][i]<<1)|(dp[k&1^1][i-1])|(dp[k&1^1][i+1]));
            }
            else {
                if(s[k-1] == 'S') dp[k&1][i] = a[i]&dp[k&1^1][i-1];
                if(s[k-1] == 'N') dp[k&1][i] = a[i]&dp[k&1^1][i+1];
                if(s[k-1] == 'W') dp[k&1][i] = a[i]&(dp[k&1^1][i]>>1);
                if(s[k-1] == 'E') dp[k&1][i] = a[i]&(dp[k&1^1][i]<<1);
            }
        }
    }
    int ans = 0;
    for(int i = 1; i <= r; i++) {
        for(int j = 1; j <= c; j++) {
            ans+= dp[m&1][i][j];
        }
    }
    cout << ans << endl;
}

int32_t main() {
    ios::sync_with_stdio(false); cin.tie(0);

    // freopen("in.in", "r", stdin);
    // freopen("out.out", "w", stdout);
    int tt = 1;
    // cin >> tt;
    while(tt--) {
        solve();
    }

}

Compilation message

nautilus.cpp: In function 'void solve()':
nautilus.cpp:38:41: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   38 |                 dp[k&1][i] = a[i]&((dp[k&1^1][i]>>1)|(dp[k&1^1][i]<<1)|(dp[k&1^1][i-1])|(dp[k&1^1][i+1]));
      |                                        ~^~
nautilus.cpp:38:59: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   38 |                 dp[k&1][i] = a[i]&((dp[k&1^1][i]>>1)|(dp[k&1^1][i]<<1)|(dp[k&1^1][i-1])|(dp[k&1^1][i+1]));
      |                                                          ~^~
nautilus.cpp:38:77: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   38 |                 dp[k&1][i] = a[i]&((dp[k&1^1][i]>>1)|(dp[k&1^1][i]<<1)|(dp[k&1^1][i-1])|(dp[k&1^1][i+1]));
      |                                                                            ~^~
nautilus.cpp:38:94: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   38 |                 dp[k&1][i] = a[i]&((dp[k&1^1][i]>>1)|(dp[k&1^1][i]<<1)|(dp[k&1^1][i-1])|(dp[k&1^1][i+1]));
      |                                                                                             ~^~
nautilus.cpp:41:57: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   41 |                 if(s[k-1] == 'S') dp[k&1][i] = a[i]&dp[k&1^1][i-1];
      |                                                        ~^~
nautilus.cpp:42:57: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   42 |                 if(s[k-1] == 'N') dp[k&1][i] = a[i]&dp[k&1^1][i+1];
      |                                                        ~^~
nautilus.cpp:43:58: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   43 |                 if(s[k-1] == 'W') dp[k&1][i] = a[i]&(dp[k&1^1][i]>>1);
      |                                                         ~^~
nautilus.cpp:44:58: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   44 |                 if(s[k-1] == 'E') dp[k&1][i] = a[i]&(dp[k&1^1][i]<<1);
      |                                                         ~^~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 412 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 336 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 412 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 336 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 312 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 1 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 2 ms 340 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 412 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 336 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 312 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 1 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 2 ms 340 KB Output is correct
22 Correct 91 ms 700 KB Output is correct
23 Correct 99 ms 704 KB Output is correct
24 Correct 85 ms 596 KB Output is correct
25 Correct 82 ms 704 KB Output is correct
26 Correct 81 ms 672 KB Output is correct
27 Correct 134 ms 596 KB Output is correct
28 Correct 136 ms 700 KB Output is correct
29 Correct 121 ms 600 KB Output is correct
30 Correct 125 ms 696 KB Output is correct
31 Correct 123 ms 676 KB Output is correct
32 Correct 158 ms 700 KB Output is correct
33 Correct 158 ms 700 KB Output is correct
34 Correct 155 ms 600 KB Output is correct
35 Correct 162 ms 616 KB Output is correct
36 Correct 154 ms 596 KB Output is correct