oj.uz

Submission #1005860

# Submission time Handle Problem Language Result Execution time Memory
1005860 2024-06-23T07:17:44 Z vjudge1 Awesome Arrowland Adventure (eJOI19_adventure) C++17
0 / 100
 1 ms 348 KB 
#include <bits/stdc++.h>
// author : Pluton

#define OPT ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define int ll
#define ll long long
#define pb push_back
#define arr array
#define fi first
#define se second
#define rep(i, j, k) for (int i = j; i <= k; ++i)
#define all(a) a.begin(), a.end()
#define pii pair<int,int>
using namespace std;
const int INF = 1e18;

struct BIT {
    int n;
    vector<int> ft;

    void init(int N) {
        n = N + 5;
        ft.assign(n + 5, 0);
    }

    void add(int pos, int val) {
        for (pos = pos + 1; pos <= n; pos += pos & -pos) ft[pos] += val;
    }

    int get(int pos, int res = 0) {
        for (pos = pos + 1; pos > 0; pos -= pos & -pos) res += ft[pos];
        return res;
    }
};

map<char, vector<vector<int>>> d;
int n, m;

bool f(int x, int y) {
    if (x >= 0 && x < n && y >= 0 && y < m) {
        return true;
    }
    return false;
}

const int N = 505;
vector<vector<char>> g;
vector<vector<int>> cost;

int bfs() {
    priority_queue<vector<int>, vector<vector<int>>, greater<vector<int>>> q;
    q.push({0, 0, 0});
    cost[0][0] = 0;
    while (!q.empty()) {
        vector<int> u = q.top();
        q.pop();
        auto move = d[g[u[1]][u[2]]];
        for (auto e : move) {
            int x = e[0] + u[1];
            int y = e[1] + u[2];
            if (f(x, y) && cost[y][x] > cost[u[1]][u[2]] + e[2]) {
                cost[y][x] = cost[u[1]][u[2]] + e[2];
                q.push({cost[y][x], x, y});
            }
        }
    }
    return cost[m - 1][n - 1];
}

void _() {
    d['N'] = {{-1, 0, 1}, {1, 0, 1}, {0, 1, 0}, {0, -1, 0}, {0, 1, 2}, {0, -1, 2}};
    d['X'] = {};
    cin >> m >> n;
    for (int i = 0; i < m; ++i) {
        g.push_back({});
        cost.push_back({});
        for (int j = 0; j < n; ++j) {
            char c;
            cin >> c;
            g[i].push_back(c);
            cost[i].push_back(INF);
        }
    }
    int res = bfs();
    cout << (res == INF ? -1 : res);
}

signed main() {
    OPT
    int tc = 1;
    while (tc--) {
        _();
    }
    return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -