oj.uz

Submission #1019327

# Submission time Handle Problem Language Result Execution time Memory
1019327 2024-07-10T17:31:34 Z MrPavlito Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 73 ms 28240 KB 
#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define sc second
#define endl "\n"
#define pii pair<int,int>

using namespace std;

const int MAXN = 500*500+5;
const int mod7 = 1e9+7;
const long long inf = 1e18;


vector<vector<pii>> graf(MAXN);
int n,m;

int calc(char a)
{
    if(a == 'E')return 1;
    if(a == 'S')return 2;
    if(a == 'W')return 3;
    if(a == 'N')return 4;
    return INT_MAX;
}

int f(char a, char b)
{
    int t =(calc(b) - calc(a));
    if(t<0)return 4+t;
    else return t;
}

set<pii> que;
vector<int> dist(MAXN, inf);


void dikstra(int nod)
{
    dist[nod] = 0;
    que.insert(mp(0, nod));
    while(!que.empty())
    {
        auto it = que.begin();
        int u = it -> second;
        que.erase(it);
        for(auto x: graf[u])
        {
            int v = x.fi; int w = x.sc;
            if(dist[v] > dist[u]+w)
            {
                que.erase({dist[v], v});
                dist[v] = dist[u] + w;
                que.insert({dist[v], v});
            }
        }
    }

}

signed main()
{
    ios_base::sync_with_stdio(false),cin.tie(0), cout.tie(0);
    int tt=1;
    //cin >> tt;
    while(tt--)
    {
        cin >> n >> m;
        vector<vector<char>> mat(n, vector<char>(m));
        for(int i=0; i<n; i++)
        {
            string s;cin >> s;
            for(int j=0; j<m;j++)
            {
                mat[i][j] = s[j];
                if(calc(s[j]) == INT_MAX)continue;
                if(i!=n-1)graf[i*m+j].pb(mp( (i+1)*m+j,f(mat[i][j], 'S')));
                if(i!=0)graf[i*m+j].pb(mp((i-1)*m+j,f(mat[i][j], 'N')));
                if(j!=0)graf[i*m+j].pb(mp(i*m+j-1,f(mat[i][j], 'W')));
                if(j!=m-1)graf[i*m+j].pb(mp(i*m+j+1,f(mat[i][j], 'E')));
            }
        }
        for(int i=0; i<n; i++)
        dikstra(0);
        if(dist[n*m-1] == inf)cout << -1 << endl;
        else cout << dist[n*m-1] << endl;

    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8284 KB Output is correct
2 Correct 3 ms 8136 KB Output is correct
3 Correct 3 ms 8280 KB Output is correct
4 Correct 3 ms 8284 KB Output is correct
5 Correct 4 ms 8288 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8280 KB Output is correct
8 Correct 4 ms 8284 KB Output is correct
9 Correct 5 ms 8280 KB Output is correct
10 Correct 3 ms 8284 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8284 KB Output is correct
2 Correct 3 ms 8136 KB Output is correct
3 Correct 3 ms 8280 KB Output is correct
4 Correct 3 ms 8284 KB Output is correct
5 Correct 4 ms 8288 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8280 KB Output is correct
8 Correct 4 ms 8284 KB Output is correct
9 Correct 5 ms 8280 KB Output is correct
10 Correct 3 ms 8284 KB Output is correct
11 Correct 3 ms 8284 KB Output is correct
12 Correct 3 ms 8284 KB Output is correct
13 Correct 3 ms 8284 KB Output is correct
14 Correct 3 ms 8284 KB Output is correct
15 Correct 3 ms 8284 KB Output is correct
16 Correct 3 ms 8284 KB Output is correct
17 Correct 3 ms 8284 KB Output is correct
18 Correct 3 ms 8284 KB Output is correct
19 Correct 3 ms 8284 KB Output is correct
20 Correct 3 ms 8284 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8280 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 4 ms 8068 KB Output is correct
4 Correct 3 ms 8284 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8284 KB Output is correct
2 Correct 3 ms 8284 KB Output is correct
3 Correct 4 ms 8300 KB Output is correct
4 Correct 3 ms 8284 KB Output is correct
5 Correct 4 ms 8284 KB Output is correct
6 Correct 4 ms 8284 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 3 ms 8108 KB Output is correct
9 Correct 3 ms 8280 KB Output is correct
10 Correct 3 ms 8296 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8284 KB Output is correct
2 Correct 3 ms 8136 KB Output is correct
3 Correct 3 ms 8280 KB Output is correct
4 Correct 3 ms 8284 KB Output is correct
5 Correct 4 ms 8288 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8280 KB Output is correct
8 Correct 4 ms 8284 KB Output is correct
9 Correct 5 ms 8280 KB Output is correct
10 Correct 3 ms 8284 KB Output is correct
11 Correct 3 ms 8284 KB Output is correct
12 Correct 3 ms 8284 KB Output is correct
13 Correct 3 ms 8284 KB Output is correct
14 Correct 3 ms 8284 KB Output is correct
15 Correct 3 ms 8284 KB Output is correct
16 Correct 3 ms 8284 KB Output is correct
17 Correct 3 ms 8284 KB Output is correct
18 Correct 3 ms 8284 KB Output is correct
19 Correct 3 ms 8284 KB Output is correct
20 Correct 3 ms 8284 KB Output is correct
21 Correct 3 ms 8280 KB Output is correct
22 Correct 2 ms 8284 KB Output is correct
23 Correct 4 ms 8068 KB Output is correct
24 Correct 3 ms 8284 KB Output is correct
25 Correct 3 ms 8284 KB Output is correct
26 Correct 3 ms 8284 KB Output is correct
27 Correct 4 ms 8300 KB Output is correct
28 Correct 3 ms 8284 KB Output is correct
29 Correct 4 ms 8284 KB Output is correct
30 Correct 4 ms 8284 KB Output is correct
31 Correct 3 ms 8284 KB Output is correct
32 Correct 3 ms 8108 KB Output is correct
33 Correct 3 ms 8280 KB Output is correct
34 Correct 3 ms 8296 KB Output is correct
35 Correct 9 ms 9564 KB Output is correct
36 Correct 4 ms 8280 KB Output is correct
37 Correct 9 ms 9816 KB Output is correct
38 Correct 6 ms 10844 KB Output is correct
39 Correct 69 ms 24476 KB Output is correct
40 Correct 69 ms 24408 KB Output is correct
41 Correct 26 ms 24408 KB Output is correct
42 Correct 73 ms 24408 KB Output is correct
43 Correct 63 ms 28240 KB Output is correct
44 Correct 25 ms 24412 KB Output is correct