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Submission #782155

# Submission time Handle Problem Language Result Execution time Memory
782155 2023-07-13T15:47:09 Z HoriaHaivas Awesome Arrowland Adventure (eJOI19_adventure) C++14
100 / 100
 86 ms 21568 KB 
/*
    "TLE is like the wind, always by my side"
    - Yasuo - 2022 -
*/
#include <bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize("Ofast")

using namespace std;

struct edge
{
    int endnode;
    int cost;
};

struct pqnode
{
    int node;
    int cost;
};

struct cmp
{
    bool operator()(pqnode a, pqnode b)
    {
         return a.cost>b.cost;
    }
};

int n,m;
char a[501][501];
int mincost[250001];
vector<edge> nodes[250001];
bool visited[250001];
priority_queue<pqnode,vector<pqnode>,cmp> pq;
const int inf = 1e9;

int compress(int l, int c)
{
    return m*(l-1)+c;
}

void dijkstra(int source)
{
     int i,c,currnode;
     for (i=1;i<=n*m;i++)
     {
          mincost[i]=inf;
     }
     pq.push({source,0});
     while (!pq.empty())
     {
          currnode=pq.top().node;
          c=pq.top().cost;
          pq.pop();
          if (!visited[currnode])
          {
              visited[currnode]=1;
              mincost[currnode]=c;
              for (i=0;i<nodes[currnode].size();i++)
              {
                   if (!visited[nodes[currnode][i].endnode] && c+nodes[currnode][i].cost<mincost[nodes[currnode][i].endnode])
                   pq.push({nodes[currnode][i].endnode,c+nodes[currnode][i].cost});
              }
          }
     }
}

void addedge(int node, int l, int c, char dir)
{
      if (dir=='N')
      {
          if (l-1>0 && l-1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l-1,c),0});
          if (l+1>0 && l+1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l+1,c),2});
          if (l>0 && l<n+1 && c-1>0 && c-1<m+1)
          nodes[node].push_back({compress(l,c-1),3});
          if (l>0 && l<n+1 && c+1>0 && c+1<m+1)
          nodes[node].push_back({compress(l,c+1),1});
      }
      if (dir=='W')
      {
          if (l-1>0 && l-1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l-1,c),1});
          if (l+1>0 && l+1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l+1,c),3});
          if (l>0 && l<n+1 && c-1>0 && c-1<m+1)
          nodes[node].push_back({compress(l,c-1),0});
          if (l>0 && l<n+1 && c+1>0 && c+1<m+1)
          nodes[node].push_back({compress(l,c+1),2});
      }
      if (dir=='S')
      {
          if (l-1>0 && l-1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l-1,c),2});
          if (l+1>0 && l+1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l+1,c),0});
          if (l>0 && l<n+1 && c-1>0 && c-1<m+1)
          nodes[node].push_back({compress(l,c-1),1});
          if (l>0 && l<n+1 && c+1>0 && c+1<m+1)
          nodes[node].push_back({compress(l,c+1),3});
      }
      if (dir=='E')
      {
          if (l-1>0 && l-1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l-1,c),3});
          if (l+1>0 && l+1<n+1 && c>0 && c<m+1)
          nodes[node].push_back({compress(l+1,c),1});
          if (l>0 && l<n+1 && c-1>0 && c-1<m+1)
          nodes[node].push_back({compress(l,c-1),2});
          if (l>0 && l<n+1 && c+1>0 && c+1<m+1)
          nodes[node].push_back({compress(l,c+1),0});
      }
}

int main()
{
    ifstream fin("secvp.in");
    ofstream fout("secvp.out");
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int i,j;
    cin >> n >> m;
    for (i=1;i<=n;i++)
    {
         for (j=1;j<=m;j++)
         {
              cin >> a[i][j];
         }
    }
    for (i=1;i<=n;i++)
    {
        for (j=1;j<=m;j++)
        {
             if (a[i][j]!='X')
             addedge(compress(i,j),i,j,a[i][j]);
        }
    }
    dijkstra(1);
    if (mincost[n*m]!=inf)
    cout << mincost[n*m];
    else
    cout << -1;
}

Compilation message

adventure.cpp: In function 'void dijkstra(int)':
adventure.cpp:62:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |               for (i=0;i<nodes[currnode].size();i++)
      |                        ~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6100 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6228 KB Output is correct
5 Correct 3 ms 6216 KB Output is correct
6 Correct 3 ms 6100 KB Output is correct
7 Correct 3 ms 6100 KB Output is correct
8 Correct 4 ms 6188 KB Output is correct
9 Correct 3 ms 6216 KB Output is correct
10 Correct 3 ms 6168 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6100 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6228 KB Output is correct
5 Correct 3 ms 6216 KB Output is correct
6 Correct 3 ms 6100 KB Output is correct
7 Correct 3 ms 6100 KB Output is correct
8 Correct 4 ms 6188 KB Output is correct
9 Correct 3 ms 6216 KB Output is correct
10 Correct 3 ms 6168 KB Output is correct
11 Correct 3 ms 6100 KB Output is correct
12 Correct 4 ms 6228 KB Output is correct
13 Correct 3 ms 6220 KB Output is correct
14 Correct 4 ms 6216 KB Output is correct
15 Correct 3 ms 6212 KB Output is correct
16 Correct 3 ms 6228 KB Output is correct
17 Correct 3 ms 6216 KB Output is correct
18 Correct 3 ms 6100 KB Output is correct
19 Correct 3 ms 6100 KB Output is correct
20 Correct 3 ms 6228 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 6100 KB Output is correct
2 Correct 3 ms 6100 KB Output is correct
3 Correct 3 ms 6100 KB Output is correct
4 Correct 3 ms 6204 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6220 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6212 KB Output is correct
5 Correct 4 ms 6228 KB Output is correct
6 Correct 3 ms 6228 KB Output is correct
7 Correct 4 ms 6228 KB Output is correct
8 Correct 3 ms 6216 KB Output is correct
9 Correct 3 ms 6228 KB Output is correct
10 Correct 3 ms 6228 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6228 KB Output is correct
2 Correct 3 ms 6100 KB Output is correct
3 Correct 3 ms 6228 KB Output is correct
4 Correct 3 ms 6228 KB Output is correct
5 Correct 3 ms 6216 KB Output is correct
6 Correct 3 ms 6100 KB Output is correct
7 Correct 3 ms 6100 KB Output is correct
8 Correct 4 ms 6188 KB Output is correct
9 Correct 3 ms 6216 KB Output is correct
10 Correct 3 ms 6168 KB Output is correct
11 Correct 3 ms 6100 KB Output is correct
12 Correct 4 ms 6228 KB Output is correct
13 Correct 3 ms 6220 KB Output is correct
14 Correct 4 ms 6216 KB Output is correct
15 Correct 3 ms 6212 KB Output is correct
16 Correct 3 ms 6228 KB Output is correct
17 Correct 3 ms 6216 KB Output is correct
18 Correct 3 ms 6100 KB Output is correct
19 Correct 3 ms 6100 KB Output is correct
20 Correct 3 ms 6228 KB Output is correct
21 Correct 9 ms 6100 KB Output is correct
22 Correct 3 ms 6100 KB Output is correct
23 Correct 3 ms 6100 KB Output is correct
24 Correct 3 ms 6204 KB Output is correct
25 Correct 3 ms 6228 KB Output is correct
26 Correct 3 ms 6220 KB Output is correct
27 Correct 3 ms 6228 KB Output is correct
28 Correct 3 ms 6212 KB Output is correct
29 Correct 4 ms 6228 KB Output is correct
30 Correct 3 ms 6228 KB Output is correct
31 Correct 4 ms 6228 KB Output is correct
32 Correct 3 ms 6216 KB Output is correct
33 Correct 3 ms 6228 KB Output is correct
34 Correct 3 ms 6228 KB Output is correct
35 Correct 8 ms 7124 KB Output is correct
36 Correct 3 ms 6228 KB Output is correct
37 Correct 10 ms 7380 KB Output is correct
38 Correct 8 ms 8036 KB Output is correct
39 Correct 70 ms 17288 KB Output is correct
40 Correct 70 ms 17288 KB Output is correct
41 Correct 29 ms 17016 KB Output is correct
42 Correct 70 ms 17312 KB Output is correct
43 Correct 86 ms 21568 KB Output is correct
44 Correct 30 ms 17056 KB Output is correct