oj.uz

Submission #467832

# Submission time Handle Problem Language Result Execution time Memory
467832 2021-08-24T21:40:03 Z jurgis Awesome Arrowland Adventure (eJOI19_adventure) C++14
100 / 100
 169 ms 42144 KB 
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define fi first
#define se second
#define p push
#define pb push_back
#define F(end) for(int i=0; i<end; i++)
#define ll long long
int m, n; const int inf = 1e9;
const int maxn = 1e6;
bool vis[maxn]; ll dist[maxn];
vector<pii> adj[maxn];
priority_queue<pii,vector<pii>, greater<pii>> q;
int pirmine[maxn];
void dijkstra(int x){
    for(int i=0; i<m*n; i++){
        vis[i] = false; dist[i] = inf; pirmine[i] =-1;
    }
    dist[x] = 0;
    q.p({dist[x], x});
    while(!q.empty()){
        int v = q.top().se; q.pop();
        if(vis[v])continue;
        vis[v] = true;
        for(auto u: adj[v]){
            int j = u.fi; int w = u.se;

            if(dist[v] +w < dist[j]){
                dist[j] = dist[v] +w;
                pirmine[j] = v;
                q.p({dist[j], j});
            }
        }
    }

}
int main()
{
     cin>>m>>n; string s[m];
    F(m)cin>>s[i];
    F(m){
        for(int a=0; a<n-1; a++){
            if(s[i][a] == 'E')adj[a + i*n].pb({a+i*n +1, 0});
            if(s[i][a] == 'N')adj[a + i*n].pb({a+i*n +1, 1});
            if(s[i][a] == 'W')adj[a + i*n].pb({a+i*n +1, 2});
            if(s[i][a] == 'S')adj[a + i*n].pb({a+i*n +1, 3});

        }
    }
    F(m){
        for(int a=1; a<n; a++){
            if(s[i][a] == 'W')adj[a + i*n].pb({a+i*n -1, 0});
            if(s[i][a] == 'S')adj[a + i*n].pb({a+i*n -1, 1});
            if(s[i][a] == 'E')adj[a + i*n].pb({a+i*n -1, 2});
            if(s[i][a] == 'N')adj[a + i*n].pb({a+i*n -1, 3});

        }
    }
    F(n){
        for(int a=0; a<m-1; a++){
            if(s[a][i] == 'S')adj[a*n + i].pb({(a+1)*n + i, 0});
            if(s[a][i] == 'E')adj[a*n + i].pb({(a+1)*n + i, 1});
            if(s[a][i] == 'N')adj[a*n + i].pb({(a+1)*n + i, 2});
            if(s[a][i] == 'W')adj[a*n + i].pb({(a+1)*n + i, 3});

        }
    }
    F(n){
        for(int a=1; a<m; a++){
            if(s[a][i] == 'N')adj[a*n + i].pb({(a-1)*n + i, 0});
            if(s[a][i] == 'W')adj[a*n + i].pb({(a-1)*n + i, 1});
            if(s[a][i] == 'S')adj[a*n + i].pb({(a-1)*n + i, 2});
            if(s[a][i] == 'E')adj[a*n + i].pb({(a-1)*n + i, 3});

        }
    }
    dijkstra(0);
     int d = pirmine[n*m-1]; //cout<<d<<endl;
     //for(auto i: adj[0])cout<<i.fi<<i.se<<endl;
    //cout<<dist[4];
    if(dist[n*m-1] == inf){
        cout<<-1;
    }
    else{
        cout<<dist[n*m-1]<<endl;

    }

}

Compilation message

adventure.cpp: In function 'int main()':
adventure.cpp:80:10: warning: unused variable 'd' [-Wunused-variable]
   80 |      int d = pirmine[n*m-1]; //cout<<d<<endl;
      |          ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23756 KB Output is correct
2 Correct 14 ms 23776 KB Output is correct
3 Correct 14 ms 23756 KB Output is correct
4 Correct 14 ms 23756 KB Output is correct
5 Correct 16 ms 23704 KB Output is correct
6 Correct 14 ms 23700 KB Output is correct
7 Correct 14 ms 23716 KB Output is correct
8 Correct 13 ms 23768 KB Output is correct
9 Correct 14 ms 23780 KB Output is correct
10 Correct 14 ms 23756 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23756 KB Output is correct
2 Correct 14 ms 23776 KB Output is correct
3 Correct 14 ms 23756 KB Output is correct
4 Correct 14 ms 23756 KB Output is correct
5 Correct 16 ms 23704 KB Output is correct
6 Correct 14 ms 23700 KB Output is correct
7 Correct 14 ms 23716 KB Output is correct
8 Correct 13 ms 23768 KB Output is correct
9 Correct 14 ms 23780 KB Output is correct
10 Correct 14 ms 23756 KB Output is correct
11 Correct 13 ms 23756 KB Output is correct
12 Correct 14 ms 23728 KB Output is correct
13 Correct 16 ms 23792 KB Output is correct
14 Correct 13 ms 23756 KB Output is correct
15 Correct 14 ms 23784 KB Output is correct
16 Correct 15 ms 23800 KB Output is correct
17 Correct 13 ms 23756 KB Output is correct
18 Correct 13 ms 23756 KB Output is correct
19 Correct 13 ms 23724 KB Output is correct
20 Correct 13 ms 23820 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 23680 KB Output is correct
2 Correct 13 ms 23772 KB Output is correct
3 Correct 13 ms 23760 KB Output is correct
4 Correct 13 ms 23756 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23868 KB Output is correct
2 Correct 16 ms 23804 KB Output is correct
3 Correct 14 ms 23748 KB Output is correct
4 Correct 15 ms 23800 KB Output is correct
5 Correct 15 ms 23756 KB Output is correct
6 Correct 14 ms 23756 KB Output is correct
7 Correct 14 ms 23796 KB Output is correct
8 Correct 15 ms 23796 KB Output is correct
9 Correct 14 ms 23744 KB Output is correct
10 Correct 14 ms 23756 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23756 KB Output is correct
2 Correct 14 ms 23776 KB Output is correct
3 Correct 14 ms 23756 KB Output is correct
4 Correct 14 ms 23756 KB Output is correct
5 Correct 16 ms 23704 KB Output is correct
6 Correct 14 ms 23700 KB Output is correct
7 Correct 14 ms 23716 KB Output is correct
8 Correct 13 ms 23768 KB Output is correct
9 Correct 14 ms 23780 KB Output is correct
10 Correct 14 ms 23756 KB Output is correct
11 Correct 13 ms 23756 KB Output is correct
12 Correct 14 ms 23728 KB Output is correct
13 Correct 16 ms 23792 KB Output is correct
14 Correct 13 ms 23756 KB Output is correct
15 Correct 14 ms 23784 KB Output is correct
16 Correct 15 ms 23800 KB Output is correct
17 Correct 13 ms 23756 KB Output is correct
18 Correct 13 ms 23756 KB Output is correct
19 Correct 13 ms 23724 KB Output is correct
20 Correct 13 ms 23820 KB Output is correct
21 Correct 16 ms 23680 KB Output is correct
22 Correct 13 ms 23772 KB Output is correct
23 Correct 13 ms 23760 KB Output is correct
24 Correct 13 ms 23756 KB Output is correct
25 Correct 14 ms 23868 KB Output is correct
26 Correct 16 ms 23804 KB Output is correct
27 Correct 14 ms 23748 KB Output is correct
28 Correct 15 ms 23800 KB Output is correct
29 Correct 15 ms 23756 KB Output is correct
30 Correct 14 ms 23756 KB Output is correct
31 Correct 14 ms 23796 KB Output is correct
32 Correct 15 ms 23796 KB Output is correct
33 Correct 14 ms 23744 KB Output is correct
34 Correct 14 ms 23756 KB Output is correct
35 Correct 23 ms 25044 KB Output is correct
36 Correct 15 ms 23872 KB Output is correct
37 Correct 24 ms 25164 KB Output is correct
38 Correct 29 ms 26060 KB Output is correct
39 Correct 139 ms 37668 KB Output is correct
40 Correct 133 ms 37552 KB Output is correct
41 Correct 89 ms 37492 KB Output is correct
42 Correct 161 ms 37584 KB Output is correct
43 Correct 169 ms 42144 KB Output is correct
44 Correct 99 ms 37584 KB Output is correct