oj.uz

Submission #211397

# Submission time Handle Problem Language Result Execution time Memory
211397 2020-03-20T09:09:49 Z casperwang Nautilus (BOI19_nautilus) C++14
66 / 100
 1000 ms 1664 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 500;
int r, c, m;
int d;
int cnt;
string str;
string mp[MAXN+5];
bool dp[MAXN+5][MAXN+5][2];
int dx[4] = {-1, 1, 0, 0};
int dy[4] = {0, 0, -1, 1};

signed main() {
  ios_base::sync_with_stdio(0), cin.tie(0);
  cin >> r >> c >> m;
  for (int i = 1; i <= r; i++) {
    cin >> mp[i];
    mp[i] = "#" + mp[i] + "#";
  }
  cin >> str;
  for (int i = 0; i <= c+1; i++) {
    mp[0] = mp[0] + "#";
    mp[r+1] = mp[r+1] + "#";
  }
  for (int i = 1; i <= r; i++)
    for (int j = 1; j <= c; j++)
      dp[i][j][1] = (mp[i][j] != '#');
  for (int k = 0; k < m; k++) {
    if (str[k] == '?') {
      for (int i = 1; i <= r; i++)
        for (int j = 1; j <= c; j++)
          for (dp[i][j][k&1] = d = 0; d < 4 && !dp[i][j][k&1]; d++)
            dp[i][j][k&1] |= ((mp[i][j] != '#') & (dp[i+dx[d]][j+dy[d]][(k+1)&1]));
    } else {
      if (str[k] == 'S') d = 0;
      else if (str[k] == 'N') d = 1;
      else if (str[k] == 'E') d = 2;
      else if (str[k] == 'W') d = 3;
      for (int i = 1; i <= r; i++)
        for (int j = 1; j <= c; j++)
          dp[i][j][k&1] = ((mp[i][j] != '#') & (dp[i+dx[d]][j+dy[d]][(k+1)&1]));
    }
  }
  for (int i = 1; i <= r; i++)
    for (int j = 1; j <= c; j++)
      cnt += dp[i][j][(m+1)&1];
  cout << cnt << "\n";
}

Compilation message

nautilus.cpp: In function 'int main()':
nautilus.cpp:33:34: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
           for (dp[i][j][k&1] = d = 0; d < 4 && !dp[i][j][k&1]; d++)
                                ~~^~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 6 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 7 ms 512 KB Output is correct
6 Correct 7 ms 512 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 6 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 7 ms 512 KB Output is correct
6 Correct 7 ms 512 KB Output is correct
7 Correct 6 ms 512 KB Output is correct
8 Correct 9 ms 512 KB Output is correct
9 Correct 9 ms 512 KB Output is correct
10 Correct 9 ms 512 KB Output is correct
11 Correct 8 ms 512 KB Output is correct
12 Correct 8 ms 512 KB Output is correct
13 Correct 13 ms 512 KB Output is correct
14 Correct 15 ms 512 KB Output is correct
15 Correct 14 ms 512 KB Output is correct
16 Correct 12 ms 512 KB Output is correct
17 Correct 8 ms 512 KB Output is correct
18 Correct 16 ms 512 KB Output is correct
19 Correct 17 ms 512 KB Output is correct
20 Correct 16 ms 512 KB Output is correct
21 Correct 15 ms 512 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct
3 Correct 6 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 7 ms 512 KB Output is correct
6 Correct 7 ms 512 KB Output is correct
7 Correct 6 ms 512 KB Output is correct
8 Correct 9 ms 512 KB Output is correct
9 Correct 9 ms 512 KB Output is correct
10 Correct 9 ms 512 KB Output is correct
11 Correct 8 ms 512 KB Output is correct
12 Correct 8 ms 512 KB Output is correct
13 Correct 13 ms 512 KB Output is correct
14 Correct 15 ms 512 KB Output is correct
15 Correct 14 ms 512 KB Output is correct
16 Correct 12 ms 512 KB Output is correct
17 Correct 8 ms 512 KB Output is correct
18 Correct 16 ms 512 KB Output is correct
19 Correct 17 ms 512 KB Output is correct
20 Correct 16 ms 512 KB Output is correct
21 Correct 15 ms 512 KB Output is correct
22 Execution timed out 1096 ms 1664 KB Time limit exceeded
23 Halted 0 ms 0 KB -