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Submission #832151

# Submission time Handle Problem Language Result Execution time Memory
832151 2023-08-21T03:42:32 Z KaleemRazaSyed Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 235 ms 40536 KB 
#include<bits/stdc++.h>

using namespace std;

int n, m;
const int MAXN = 2.5e5+10, inf = 2e9;
vector<int> G[MAXN], W[MAXN];
int dis[MAXN];

inline bool valid(int x, int y)
{
  int i = x / m, j = x % m;
  int iy = y / m, jy = y % m;
  return (i>=0 and j>=0 and i<n and j<m and (i==iy or j==jy));
}
inline int moves(char a, char b)
{
  string s = "NESW";
  int m = 0, i;
  for(i=0;i<4;i++)
    if(s[i]==a)
      break;
  while(s[(i+m)%4]!=b)
    m++;
  return m;
}

void Dij()
{
  set<pair<int,int> > s;
  dis[0] = 0;
  for(int i=0;i<n*m;i++)
    s.insert({dis[i], i});
  while(s.size())
    {
      int v = s.begin()->second;
      s.erase(s.begin());
      for(int i=0;i<G[v].size(); i++)
	{
	  int u = G[v][i], w = W[v][i];
	  if(dis[v]+w < dis[u])
	    {
	      s.erase({dis[u], u});
	      dis[u] = dis[v] + w;
	      s.insert({dis[u], u});
	    }
	  
	}
    }
}

int main()
{
  cin >> n >> m;
  for(int i=0;i<n;i++)
    for(int j=0;j<m;j++)
      {
	int num = i*m + j;
	dis[num] = inf;
	char c;
	cin >> c;
	if(c == 'X')
	  continue;
	string dir = "EWNS";
	int d[] = {1, -1, -m, m};
	for(int k=0;k<4;k++)
	  if(valid(num+d[k], num))
	    {
	      //cerr << "edge( " << num << ", " << num+d[k] << ")\n";
	      //cerr << "move( " << c << ", " << dir[k] << ") = " << moves(c, dir[k]) << endl; 
	      G[num].push_back(num + d[k]);
	      W[num].push_back(moves(c, dir[k]));
	    }
      }
  Dij();
  int l = n*m-1;
  dis[l] = (dis[l]==inf)?-1:dis[l];
  cout << dis[l] << endl;
  return 0;
}

Compilation message

adventure.cpp: In function 'void Dij()':
adventure.cpp:38:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |       for(int i=0;i<G[v].size(); i++)
      |                   ~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 12052 KB Output is correct
3 Correct 6 ms 12008 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 7 ms 12116 KB Output is correct
7 Correct 8 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 7 ms 12024 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 12052 KB Output is correct
3 Correct 6 ms 12008 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 7 ms 12116 KB Output is correct
7 Correct 8 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 7 ms 12024 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct
11 Correct 5 ms 11988 KB Output is correct
12 Correct 5 ms 11988 KB Output is correct
13 Correct 5 ms 11988 KB Output is correct
14 Correct 6 ms 12052 KB Output is correct
15 Correct 6 ms 11988 KB Output is correct
16 Correct 6 ms 11988 KB Output is correct
17 Correct 6 ms 11988 KB Output is correct
18 Correct 6 ms 12056 KB Output is correct
19 Correct 6 ms 11988 KB Output is correct
20 Correct 6 ms 12052 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 12056 KB Output is correct
4 Correct 8 ms 12116 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12116 KB Output is correct
2 Correct 6 ms 12044 KB Output is correct
3 Correct 5 ms 12048 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 6 ms 12116 KB Output is correct
6 Correct 7 ms 12092 KB Output is correct
7 Correct 6 ms 11988 KB Output is correct
8 Correct 6 ms 12052 KB Output is correct
9 Correct 7 ms 12040 KB Output is correct
10 Correct 6 ms 12048 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 12052 KB Output is correct
3 Correct 6 ms 12008 KB Output is correct
4 Correct 6 ms 11988 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 7 ms 12116 KB Output is correct
7 Correct 8 ms 11988 KB Output is correct
8 Correct 6 ms 11988 KB Output is correct
9 Correct 7 ms 12024 KB Output is correct
10 Correct 6 ms 11988 KB Output is correct
11 Correct 5 ms 11988 KB Output is correct
12 Correct 5 ms 11988 KB Output is correct
13 Correct 5 ms 11988 KB Output is correct
14 Correct 6 ms 12052 KB Output is correct
15 Correct 6 ms 11988 KB Output is correct
16 Correct 6 ms 11988 KB Output is correct
17 Correct 6 ms 11988 KB Output is correct
18 Correct 6 ms 12056 KB Output is correct
19 Correct 6 ms 11988 KB Output is correct
20 Correct 6 ms 12052 KB Output is correct
21 Correct 5 ms 11988 KB Output is correct
22 Correct 6 ms 11988 KB Output is correct
23 Correct 6 ms 12056 KB Output is correct
24 Correct 8 ms 12116 KB Output is correct
25 Correct 6 ms 12116 KB Output is correct
26 Correct 6 ms 12044 KB Output is correct
27 Correct 5 ms 12048 KB Output is correct
28 Correct 6 ms 11988 KB Output is correct
29 Correct 6 ms 12116 KB Output is correct
30 Correct 7 ms 12092 KB Output is correct
31 Correct 6 ms 11988 KB Output is correct
32 Correct 6 ms 12052 KB Output is correct
33 Correct 7 ms 12040 KB Output is correct
34 Correct 6 ms 12048 KB Output is correct
35 Correct 22 ms 14292 KB Output is correct
36 Correct 6 ms 12276 KB Output is correct
37 Correct 26 ms 14748 KB Output is correct
38 Correct 23 ms 16160 KB Output is correct
39 Correct 235 ms 37724 KB Output is correct
40 Correct 208 ms 37504 KB Output is correct
41 Correct 110 ms 37432 KB Output is correct
42 Correct 210 ms 37524 KB Output is correct
43 Correct 196 ms 40536 KB Output is correct
44 Correct 110 ms 37472 KB Output is correct