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Submission #966307

# Submission time Handle Problem Language Result Execution time Memory
966307 2024-04-19T16:40:22 Z rahidilbayramli Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 101 ms 48064 KB 
#pragma GCC optimize("-O3")
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define vl vector<ll>
#define vi vector<int>
#define pll pair<ll, ll>
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
#define rall(v) v.begin(), v.end()
#define pb push_back
#define p_b pop_back
#define f first
#define s second
using namespace std;
const ll sz = 600;
vector<pair<pll, ll>>g[sz][sz];
ll dist[sz][sz], vis[sz][sz];
void dijkstra(pll node)
{
    for(ll i = 0; i < sz; i++)
    {
        for(ll j = 0; j < sz; j++)
            dist[i][j] = 0x3F3F3F3F;
    }
    dist[node.f][node.s] = 0;
    priority_queue<pair<ll, pll>>pq;
    pq.push({0, {node.f, node.s}});
    while(!pq.empty())
    {
        ll a = pq.top().s.f, b = pq.top().s.s;
        pq.pop();
        if(vis[a][b])
            continue;
        vis[a][b] = 1;
        for(auto [u, w] : g[a][b])
        {
            if(dist[u.f][u.s] > dist[a][b] + w)
            {
                dist[u.f][u.s] = dist[a][b] + w;
                pq.push({-dist[u.f][u.s], u});
            }
        }
    }
}
void solve()
{
    ll n, m, i, j;
    cin >> n >> m;
    char grid[n+5][m+5];
    for(i = 1; i <= n; i++)
    {
        for(j = 1; j <= m; j++)
            cin >> grid[i][j];
    }
    // E, S, W, N
    for(i = 1; i <= n; i++)
    {
        for(j = 1; j <= m; j++)
        {
            if(grid[i][j] == 'W')
            {
                if(j - 1 >= 1)
                    g[i][j].pb({{i, j - 1}, 0});
                if(j + 1 <= m)
                    g[i][j].pb({{i, j + 1}, 2});
                if(i - 1 >= 1)
                    g[i][j].pb({{i - 1, j}, 1});
                if(i + 1 <= n)
                    g[i][j].pb({{i + 1, j}, 3});
            }
            else    if(grid[i][j] == 'N')
            {
                if(j - 1 >= 1)
                    g[i][j].pb({{i, j - 1}, 3});
                if(j + 1 <= m)
                    g[i][j].pb({{i, j + 1}, 1});
                if(i - 1 >= 1)
                    g[i][j].pb({{i - 1, j}, 0});
                if(i + 1 <= n)
                    g[i][j].pb({{i + 1, j}, 2});
            }
            else    if(grid[i][j] == 'E')
            {
                if(j - 1 >= 1)
                    g[i][j].pb({{i, j - 1}, 2});
                if(j + 1 <= m)
                    g[i][j].pb({{i, j + 1}, 0});
                if(i - 1 >= 1)
                    g[i][j].pb({{i - 1, j}, 3});
                if(i + 1 <= n)
                    g[i][j].pb({{i + 1, j}, 1});
            }
            else    if(grid[i][j] == 'S')
            {
                if(j - 1 >= 1)
                    g[i][j].pb({{i, j - 1}, 1});
                if(j + 1 <= m)
                    g[i][j].pb({{i, j + 1}, 3});
                if(i - 1 >= 1)
                    g[i][j].pb({{i - 1, j}, 2});
                if(i + 1 <= n)
                    g[i][j].pb({{i + 1, j}, 0});
            }
        }
    }
    dijkstra({1, 1});
    cout << (dist[n][m] == 0x3F3F3F3F ? -1 : dist[n][m]) << "\n";
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    ll tests = 1;
    //cin >> tests;
    while(tests--)
    {
        solve();
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12124 KB Output is correct
2 Correct 4 ms 12124 KB Output is correct
3 Correct 7 ms 12380 KB Output is correct
4 Correct 4 ms 12120 KB Output is correct
5 Correct 4 ms 12124 KB Output is correct
6 Correct 4 ms 12336 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 4 ms 12172 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12124 KB Output is correct
2 Correct 4 ms 12124 KB Output is correct
3 Correct 7 ms 12380 KB Output is correct
4 Correct 4 ms 12120 KB Output is correct
5 Correct 4 ms 12124 KB Output is correct
6 Correct 4 ms 12336 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 4 ms 12172 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 4 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 4 ms 12276 KB Output is correct
16 Correct 4 ms 12124 KB Output is correct
17 Correct 4 ms 12124 KB Output is correct
18 Correct 5 ms 12124 KB Output is correct
19 Correct 4 ms 12324 KB Output is correct
20 Correct 4 ms 12316 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12120 KB Output is correct
2 Correct 4 ms 12376 KB Output is correct
3 Correct 4 ms 12124 KB Output is correct
4 Correct 4 ms 12124 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12380 KB Output is correct
2 Correct 4 ms 12124 KB Output is correct
3 Correct 4 ms 12636 KB Output is correct
4 Correct 4 ms 12132 KB Output is correct
5 Correct 4 ms 12380 KB Output is correct
6 Correct 4 ms 12380 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 4 ms 12316 KB Output is correct
9 Correct 4 ms 12124 KB Output is correct
10 Correct 4 ms 12124 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12124 KB Output is correct
2 Correct 4 ms 12124 KB Output is correct
3 Correct 7 ms 12380 KB Output is correct
4 Correct 4 ms 12120 KB Output is correct
5 Correct 4 ms 12124 KB Output is correct
6 Correct 4 ms 12336 KB Output is correct
7 Correct 4 ms 12124 KB Output is correct
8 Correct 3 ms 12124 KB Output is correct
9 Correct 4 ms 12172 KB Output is correct
10 Correct 3 ms 12124 KB Output is correct
11 Correct 4 ms 12124 KB Output is correct
12 Correct 4 ms 12120 KB Output is correct
13 Correct 3 ms 12120 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 4 ms 12276 KB Output is correct
16 Correct 4 ms 12124 KB Output is correct
17 Correct 4 ms 12124 KB Output is correct
18 Correct 5 ms 12124 KB Output is correct
19 Correct 4 ms 12324 KB Output is correct
20 Correct 4 ms 12316 KB Output is correct
21 Correct 4 ms 12120 KB Output is correct
22 Correct 4 ms 12376 KB Output is correct
23 Correct 4 ms 12124 KB Output is correct
24 Correct 4 ms 12124 KB Output is correct
25 Correct 4 ms 12380 KB Output is correct
26 Correct 4 ms 12124 KB Output is correct
27 Correct 4 ms 12636 KB Output is correct
28 Correct 4 ms 12132 KB Output is correct
29 Correct 4 ms 12380 KB Output is correct
30 Correct 4 ms 12380 KB Output is correct
31 Correct 4 ms 12124 KB Output is correct
32 Correct 4 ms 12316 KB Output is correct
33 Correct 4 ms 12124 KB Output is correct
34 Correct 4 ms 12124 KB Output is correct
35 Correct 9 ms 14428 KB Output is correct
36 Correct 4 ms 12460 KB Output is correct
37 Correct 11 ms 15172 KB Output is correct
38 Correct 11 ms 15964 KB Output is correct
39 Correct 81 ms 37072 KB Output is correct
40 Correct 84 ms 36828 KB Output is correct
41 Correct 31 ms 34628 KB Output is correct
42 Correct 82 ms 36948 KB Output is correct
43 Correct 101 ms 48064 KB Output is correct
44 Correct 31 ms 34640 KB Output is correct