oj.uz

Submission #155975

# Submission time Handle Problem Language Result Execution time Memory
155975 2019-10-02T11:33:53 Z Minnakhmetov OBELISK (NOI14_obelisk) C++14
18 / 25
 940 ms 262144 KB 
#include <bits/stdc++.h>
   
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
 
using namespace std;
 
struct E {
    int to, w;
};
 
const int K = 505, H = 105, N = K * H, 
        C = 805, Z = 402, INF = 1e9, M = C * C * 3;
vector<pair<int, int>> holes[K];
vector<E> g[M], g2[N];
int d[M], s[K], d2[N];

int getId(int x, int y, int z) {
    return x * C * 3 + y * 3 + z;
}

void addEdge(int a, int b, int c) {
    g[a].push_back({b, c});
    g[b].push_back({a, c});
}
 
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int m, k, sx, sy, ex, ey;
    cin >> k >> m >> sx >> sy >> ex >> ey;

    for (int x = 0; x < C; x++) {
        for (int y = 0; y < C; y++) {
            if (m == 1) {
                addEdge(getId(x, y, 0), getId(x, y, 1), 0);
                addEdge(getId(x, y, 1), getId(x, y, 2), 0);
            }
            if (x + 1 < C) {
                addEdge(getId(x, y, 0), getId(x + 1, y, 1), 1);
                addEdge(getId(x, y, 2), getId(x + 1, y, 2), 1);
            }
            if (y + 1 < C) {
                addEdge(getId(x, y, 0), getId(x, y + 1, 2), 1);
                addEdge(getId(x, y, 1), getId(x, y + 1, 1), 1);
            }
            if (x + m < C) {
                addEdge(getId(x, y, 1), getId(x + m, y, 0), 1);
            }
            if (y + m < C) {
                addEdge(getId(x, y, 2), getId(x, y + m, 0), 1);
            }
        }
    }


    fill(d, d + M, -1);
    int start = getId(Z, Z, 0);
    d[start] = 0;
    deque<int> q;
    q.push_back(start);

    while (!q.empty()) {
        int node = q.front();
        q.pop_front();

        for (E e : g[node]) {
            if (d[e.to] == -1) {
                d[e.to] = d[node] + e.w;
                if (e.w)
                    q.push_back(e.to);
                else
                    q.push_front(e.to);
            }
        }
    }
    // cout << d[getId(Z + 1, Z + 1, 0)];
    // return 0;


    holes[k].push_back({sx, sy});
    holes[0].push_back({ex, ey});

    for (int i = k - 1; i > 0; i--) {
        int h;
        cin >> h;

        while (h--) {
            int x, y;
            cin >> x >> y;
            holes[i].push_back({x, y});
        }
    }


    for (int i = 0; i < k; i++) {
        s[i + 1] = s[i] + holes[i].size();
    }

    for (int i = 1; i <= k; i++) {
        for (int x = 0; x < holes[i].size(); x++) {
            for (int y = 0; y < holes[i - 1].size(); y++) {
                int dist = d[getId(holes[i - 1][y].first - holes[i][x].first + Z,
                                   holes[i - 1][y].second - holes[i][x].second + Z, 
                                   0)];
                // cout << x + s[i] << " " << y + s[i - 1] << "\n";
                g2[x + s[i]].push_back({y + s[i - 1], dist});
            }
        }
    }

    priority_queue<pair<int, int>, 
               vector<pair<int, int>>, 
               greater<pair<int, int>>> pq;
                   
    fill(d2, d2 + N, INF);
    d2[s[k]] = 0;
    pq.push({0, s[k]});
 
    while (!pq.empty()) {
        auto p = pq.top();
        pq.pop();
        if (p.first > d2[p.second])
            continue;
        int node = p.second;
 
        for (E e : g2[node]) {
            if (d2[e.to] > d2[node] + e.w) {
                d2[e.to] = d2[node] + e.w;
                pq.push({d2[e.to], e.to});
            }
        }
    }
 
    cout << d2[0] << "\n";

    return 0;
}

Compilation message

obelisk.cpp: In function 'int main()':
obelisk.cpp:102:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int x = 0; x < holes[i].size(); x++) {
                         ~~^~~~~~~~~~~~~~~~~
obelisk.cpp:103:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int y = 0; y < holes[i - 1].size(); y++) {
                             ~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 799 ms 207264 KB Output is correct
2 Correct 802 ms 207196 KB Output is correct
3 Correct 792 ms 207148 KB Output is correct
4 Correct 790 ms 207300 KB Output is correct
5 Correct 802 ms 207128 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 713 ms 147148 KB Output is correct
2 Correct 688 ms 147284 KB Output is correct
3 Correct 784 ms 147844 KB Output is correct
4 Correct 639 ms 147104 KB Output is correct
5 Correct 777 ms 147732 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 727 ms 160648 KB Output is correct
2 Correct 787 ms 164464 KB Output is correct
3 Correct 792 ms 162296 KB Output is correct
4 Correct 940 ms 164496 KB Output is correct
5 Correct 767 ms 163960 KB Output is correct

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 818 ms 262144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -