oj.uz

Submission #244269

# Submission time Handle Problem Language Result Execution time Memory
244269 2020-07-03T13:04:11 Z Matteo_Verz Awesome Arrowland Adventure (eJOI19_adventure) C++11
100 / 100
 124 ms 21492 KB 
/*
                `-/oo+/-   ``
              .oyhhhhhhyo.`od
             +hhhhyyoooos. h/
            +hhyso++oosy- /s
           .yoooossyyo:``-y`
            ..----.` ``.-/+:.`
                   `````..-::/.
                  `..```.-::///`
                 `-.....--::::/:
                `.......--::////:
               `...`....---:::://:
             `......``..--:::::///:`
            `---.......--:::::////+/`
            ----------::::::/::///++:
            ----:---:::::///////////:`
            .----::::::////////////:-`
            `----::::::::::/::::::::-
             `.-----:::::::::::::::-
               ...----:::::::::/:-`
                 `.---::/+osss+:`
                   ``.:://///-.
*/
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <cmath>

using namespace std;

const int INF = 2e9;
const int N = 500;

int n, m;

vector <pair <int, int>> g[5 + N * N];
bool viz[5 + N * N];
int dp[5 + N * N];

priority_queue <pair <int, int>, vector <pair <int, int>>, greater <pair <int, int>>> heap;

void Dijkstra(int nodStart) {
    for(int i = 1; i <= n * m; i++) dp[i] = INF;
    for(int i = 1; i <= n * m; i++) viz[i] = false;

    dp[nodStart] = 0;
    heap.push(make_pair(0, nodStart));

    while(heap.size()) {
        pair <int, int> top = heap.top();
        heap.pop();

        if(viz[top.second] == false) {
            viz[top.second] = true;

            for(auto to : g[top.second]) {
                if(dp[to.second] > to.first + dp[top.second]) {
                    dp[to.second] = to.first + dp[top.second];
                    heap.push(make_pair(dp[to.second], to.second));
                }
            }
        }
    }
}

int main() {
#ifdef BLAT
    freopen("input.in", "r", stdin);
    freopen("output.out", "w", stdout);
#endif // BLAT

    cin >> n >> m;

    for(int i = 1; i <= n; i++) {
        string s;
        cin >> s;

        for(int j = 0; j < s.size(); j++) {
            int idx = (i - 1) * m + j + 1;
            int idxn, idxe, idxs, idxw;
            idxn = idx - m;
            idxs = idx + m;
            idxe = idx + 1;
            idxw = idx - 1;

            if(s[j] == 'N') {
                if(i > 1) g[idx].push_back(make_pair(0, idxn));
                if(j < m - 1) g[idx].push_back(make_pair(1, idxe));
                if(i < n) g[idx].push_back(make_pair(2, idxs));
                if(j > 0) g[idx].push_back(make_pair(3, idxw));
            } else if(s[j] == 'E') {
                if(i > 1) g[idx].push_back(make_pair(3, idxn));
                if(j < m - 1) g[idx].push_back(make_pair(0, idxe));
                if(i < n) g[idx].push_back(make_pair(1, idxs));
                if(j > 0) g[idx].push_back(make_pair(2, idxw));
            } else if(s[j] == 'S') {
                if(i > 1) g[idx].push_back(make_pair(2, idxn));
                if(j < m - 1) g[idx].push_back(make_pair(3, idxe));
                if(i < n) g[idx].push_back(make_pair(0, idxs));
                if(j > 0) g[idx].push_back(make_pair(1, idxw));
            } else if(s[j] == 'W') {
                if(i > 1) g[idx].push_back(make_pair(1, idxn));
                if(j < m - 1) g[idx].push_back(make_pair(2, idxe));
                if(i < n) g[idx].push_back(make_pair(3, idxs));
                if(j > 0) g[idx].push_back(make_pair(0, idxw));
            }
        }
    }

    Dijkstra(1);

    if(dp[n * m] == INF) cout << -1 << '\n';
    else cout << dp[n * m] << '\n';
    return 0;
}

Compilation message

adventure.cpp: In function 'int main()':
adventure.cpp:85:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < s.size(); j++) {
                        ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Output is correct
2 Correct 8 ms 6272 KB Output is correct
3 Correct 8 ms 6272 KB Output is correct
4 Correct 8 ms 6144 KB Output is correct
5 Correct 8 ms 6272 KB Output is correct
6 Correct 8 ms 6144 KB Output is correct
7 Correct 9 ms 6144 KB Output is correct
8 Correct 8 ms 6272 KB Output is correct
9 Correct 9 ms 6272 KB Output is correct
10 Correct 8 ms 6144 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Output is correct
2 Correct 8 ms 6272 KB Output is correct
3 Correct 8 ms 6272 KB Output is correct
4 Correct 8 ms 6144 KB Output is correct
5 Correct 8 ms 6272 KB Output is correct
6 Correct 8 ms 6144 KB Output is correct
7 Correct 9 ms 6144 KB Output is correct
8 Correct 8 ms 6272 KB Output is correct
9 Correct 9 ms 6272 KB Output is correct
10 Correct 8 ms 6144 KB Output is correct
11 Correct 8 ms 6144 KB Output is correct
12 Correct 8 ms 6272 KB Output is correct
13 Correct 8 ms 6272 KB Output is correct
14 Correct 8 ms 6144 KB Output is correct
15 Correct 8 ms 6144 KB Output is correct
16 Correct 8 ms 6272 KB Output is correct
17 Correct 8 ms 6272 KB Output is correct
18 Correct 8 ms 6272 KB Output is correct
19 Correct 8 ms 6272 KB Output is correct
20 Correct 8 ms 6272 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 6272 KB Output is correct
2 Correct 8 ms 6144 KB Output is correct
3 Correct 8 ms 6144 KB Output is correct
4 Correct 9 ms 6272 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Output is correct
2 Correct 8 ms 6272 KB Output is correct
3 Correct 8 ms 6272 KB Output is correct
4 Correct 8 ms 6144 KB Output is correct
5 Correct 8 ms 6272 KB Output is correct
6 Correct 8 ms 6272 KB Output is correct
7 Correct 8 ms 6272 KB Output is correct
8 Correct 10 ms 6144 KB Output is correct
9 Correct 8 ms 6272 KB Output is correct
10 Correct 8 ms 6144 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Output is correct
2 Correct 8 ms 6272 KB Output is correct
3 Correct 8 ms 6272 KB Output is correct
4 Correct 8 ms 6144 KB Output is correct
5 Correct 8 ms 6272 KB Output is correct
6 Correct 8 ms 6144 KB Output is correct
7 Correct 9 ms 6144 KB Output is correct
8 Correct 8 ms 6272 KB Output is correct
9 Correct 9 ms 6272 KB Output is correct
10 Correct 8 ms 6144 KB Output is correct
11 Correct 8 ms 6144 KB Output is correct
12 Correct 8 ms 6272 KB Output is correct
13 Correct 8 ms 6272 KB Output is correct
14 Correct 8 ms 6144 KB Output is correct
15 Correct 8 ms 6144 KB Output is correct
16 Correct 8 ms 6272 KB Output is correct
17 Correct 8 ms 6272 KB Output is correct
18 Correct 8 ms 6272 KB Output is correct
19 Correct 8 ms 6272 KB Output is correct
20 Correct 8 ms 6272 KB Output is correct
21 Correct 9 ms 6272 KB Output is correct
22 Correct 8 ms 6144 KB Output is correct
23 Correct 8 ms 6144 KB Output is correct
24 Correct 9 ms 6272 KB Output is correct
25 Correct 8 ms 6272 KB Output is correct
26 Correct 8 ms 6272 KB Output is correct
27 Correct 8 ms 6272 KB Output is correct
28 Correct 8 ms 6144 KB Output is correct
29 Correct 8 ms 6272 KB Output is correct
30 Correct 8 ms 6272 KB Output is correct
31 Correct 8 ms 6272 KB Output is correct
32 Correct 10 ms 6144 KB Output is correct
33 Correct 8 ms 6272 KB Output is correct
34 Correct 8 ms 6144 KB Output is correct
35 Correct 16 ms 7168 KB Output is correct
36 Correct 8 ms 6328 KB Output is correct
37 Correct 20 ms 7424 KB Output is correct
38 Correct 16 ms 7936 KB Output is correct
39 Correct 105 ms 17144 KB Output is correct
40 Correct 99 ms 17016 KB Output is correct
41 Correct 54 ms 17016 KB Output is correct
42 Correct 107 ms 17160 KB Output is correct
43 Correct 124 ms 21492 KB Output is correct
44 Correct 56 ms 17148 KB Output is correct