oj.uz

Submission #467829

# Submission time Handle Problem Language Result Execution time Memory
467829 2021-08-24T21:35:32 Z jurgis Awesome Arrowland Adventure (eJOI19_adventure) C++14
34 / 100
 3 ms 588 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++)
int m, n; const int inf = 1e6;
bool vis[501]; int dist[501];
vector<pii> adj[501];
priority_queue<pii,vector<pii>, greater<pii>> q;
int pirmine[501];
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:78:10: warning: unused variable 'd' [-Wunused-variable]
   78 |      int d = pirmine[n*m-1]; //cout<<d<<endl;
      |          ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 308 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Runtime error 3 ms 588 KB Execution killed with signal 6
26 Halted 0 ms 0 KB -