oj.uz

Submission #446793

# Submission time Handle Problem Language Result Execution time Memory
446793 2021-07-23T09:20:59 Z BT21tata Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 135 ms 26448 KB 
#include<bits/stdc++.h>
// #pragma GCC target ("avx,avx2,fma")
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
typedef long long ll;
typedef long double ld;
#define SPEED ios_base::sync_with_stdio(false); cin.tie(0), cout.tie(0)
#define rall(v) (v).rbegin(),(v).rend()
#define all(v) (v).begin(),(v).end()
#define OK cerr<<"OK"<<endl<<flush
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define F first
#define S second
#define y0 jahdakdh
#define y1 jahsadakdakdh
#define endl '\n'
using namespace std;
const ll MOD=1e9+7;
// mt19937 rng(std::chrono::system_clock::now().time_since_epoch().count());

int n, m, r[4][4]={ {0,1,2,3},{3,0,1,2},{2,3,0,1},{1,2,3,0} }, dis[505][505];
char a[505][505];
vector<pair<pii, int> > g[505][505];
map<char, int>c;
bool used[505][505];
priority_queue<pair<int, pii> >q; 

int main()
{
    SPEED;
    cin>>n>>m;
    
    c['N']=0; c['E']=1; c['S']=2; c['W']=3;
    
    for(int i=1; i<=n; i++)
        for(int j=1; j<=m; j++)
            cin>>a[i][j];
    for(int i=1; i<=n; i++)
        for(int j=1; j<=m; j++)
        {
            if(a[i][j]=='X') continue;
            if(i+1<=n) g[i][j].pb({{i+1, j}, r[c[a[i][j]]][2]});
            if(j+1<=m) g[i][j].pb({{i, j+1}, r[c[a[i][j]]][1]});
            if(i-1>=1) g[i][j].pb({{i-1, j}, r[c[a[i][j]]][0]});
            if(j-1>=1) g[i][j].pb({{i, j-1}, r[c[a[i][j]]][3]});
        }

    memset(dis, 63, sizeof(dis));
    dis[1][1]=0; q.push({0, {1, 1}});
    while(!q.empty())
    {
        int x=q.top().S.F, y=q.top().S.S; q.pop();
        if(used[x][y]) continue;
        used[x][y]=1;
        for(pair<pii, int> u : g[x][y])
        {
            if(dis[x][y]+u.S<dis[u.F.F][u.F.S])
            {
                dis[u.F.F][u.F.S]=dis[x][y]+u.S;
                q.push({-dis[u.F.F][u.F.S], {u.F.F, u.F.S}});
            }
        }
    }/*
    for(int i=1; i<=n; i++, cout<<endl)
        for(int j=1; j<=m; j++)
            cout<<dis[i][j]<<' ';*/
    if(dis[n][m]==1061109567) cout<<-1<<endl;
    else cout<<dis[n][m]<<endl;
    return 0;
}
/*
    N - 0 - up
    E - 1 - right →
    S - 2 - down
    W - 3 - left ←

*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 4 ms 7244 KB Output is correct
4 Correct 4 ms 7244 KB Output is correct
5 Correct 5 ms 7316 KB Output is correct
6 Correct 5 ms 7244 KB Output is correct
7 Correct 5 ms 7244 KB Output is correct
8 Correct 4 ms 7244 KB Output is correct
9 Correct 5 ms 7244 KB Output is correct
10 Correct 4 ms 7244 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 4 ms 7244 KB Output is correct
4 Correct 4 ms 7244 KB Output is correct
5 Correct 5 ms 7316 KB Output is correct
6 Correct 5 ms 7244 KB Output is correct
7 Correct 5 ms 7244 KB Output is correct
8 Correct 4 ms 7244 KB Output is correct
9 Correct 5 ms 7244 KB Output is correct
10 Correct 4 ms 7244 KB Output is correct
11 Correct 4 ms 7244 KB Output is correct
12 Correct 5 ms 7244 KB Output is correct
13 Correct 4 ms 7244 KB Output is correct
14 Correct 4 ms 7244 KB Output is correct
15 Correct 4 ms 7244 KB Output is correct
16 Correct 5 ms 7244 KB Output is correct
17 Correct 5 ms 7244 KB Output is correct
18 Correct 5 ms 7244 KB Output is correct
19 Correct 5 ms 7244 KB Output is correct
20 Correct 5 ms 7244 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 4 ms 7244 KB Output is correct
4 Correct 4 ms 7244 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 5 ms 7244 KB Output is correct
4 Correct 5 ms 7244 KB Output is correct
5 Correct 5 ms 7244 KB Output is correct
6 Correct 5 ms 7244 KB Output is correct
7 Correct 5 ms 7244 KB Output is correct
8 Correct 6 ms 7244 KB Output is correct
9 Correct 5 ms 7244 KB Output is correct
10 Correct 4 ms 7244 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 4 ms 7244 KB Output is correct
4 Correct 4 ms 7244 KB Output is correct
5 Correct 5 ms 7316 KB Output is correct
6 Correct 5 ms 7244 KB Output is correct
7 Correct 5 ms 7244 KB Output is correct
8 Correct 4 ms 7244 KB Output is correct
9 Correct 5 ms 7244 KB Output is correct
10 Correct 4 ms 7244 KB Output is correct
11 Correct 4 ms 7244 KB Output is correct
12 Correct 5 ms 7244 KB Output is correct
13 Correct 4 ms 7244 KB Output is correct
14 Correct 4 ms 7244 KB Output is correct
15 Correct 4 ms 7244 KB Output is correct
16 Correct 5 ms 7244 KB Output is correct
17 Correct 5 ms 7244 KB Output is correct
18 Correct 5 ms 7244 KB Output is correct
19 Correct 5 ms 7244 KB Output is correct
20 Correct 5 ms 7244 KB Output is correct
21 Correct 5 ms 7244 KB Output is correct
22 Correct 5 ms 7244 KB Output is correct
23 Correct 4 ms 7244 KB Output is correct
24 Correct 4 ms 7244 KB Output is correct
25 Correct 5 ms 7244 KB Output is correct
26 Correct 5 ms 7244 KB Output is correct
27 Correct 5 ms 7244 KB Output is correct
28 Correct 5 ms 7244 KB Output is correct
29 Correct 5 ms 7244 KB Output is correct
30 Correct 5 ms 7244 KB Output is correct
31 Correct 5 ms 7244 KB Output is correct
32 Correct 6 ms 7244 KB Output is correct
33 Correct 5 ms 7244 KB Output is correct
34 Correct 4 ms 7244 KB Output is correct
35 Correct 13 ms 8500 KB Output is correct
36 Correct 5 ms 7372 KB Output is correct
37 Correct 15 ms 8652 KB Output is correct
38 Correct 12 ms 9508 KB Output is correct
39 Correct 106 ms 20368 KB Output is correct
40 Correct 108 ms 20324 KB Output is correct
41 Correct 48 ms 19968 KB Output is correct
42 Correct 111 ms 20388 KB Output is correct
43 Correct 135 ms 26448 KB Output is correct
44 Correct 47 ms 20036 KB Output is correct