oj.uz

Submission #774930

# Submission time Handle Problem Language Result Execution time Memory
774930 2023-07-06T05:55:57 Z t6twotwo Sky Walking (IOI19_walk) C++17
39 / 100
 4000 ms 465552 KB 
#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll inf = 1e18;
ll min_distance(vector<int> X, vector<int> H, vector<int> L, vector<int> R, vector<int> Y, int s, int g) {
    int N = X.size();
    int M = Y.size();
    if (s == 0 && g == N - 1 && (*min_element(H.begin(), H.end())) == (*max_element(H.begin(), H.end()))) {
        vector<pair<int, int>> p(M);
        for (int i = 0; i < M; i++) {
            p[i] = {L[i], i};
        }
        sort(p.begin(), p.end());
        vector<int> ord(M);
        iota(ord.begin(), ord.end(), 0);
        sort(ord.begin(), ord.end(), [&](int i, int j) {
            return R[i] < R[j];
        });
        vector<ll> dp(M, inf);
        int j = 0;
        set<pair<int, int>> S;
        for (int i : ord) {
            if (L[i] == 0) {
                dp[i] = Y[i] + X[R[i]] - X[L[i]];
            }
            while (j < M && p[j].first <= R[i]) {
                int x = p[j].second;
                S.emplace(Y[x], x);
                j++;
            }
            S.erase({Y[i], i});
            auto it = S.lower_bound({Y[i], -1});
            if (it != S.end()) {
                auto [y, z] = *it;
                dp[z] = min(dp[z], dp[i] + y - Y[i] + X[R[z]] - X[R[i]]);
            }
            if (it != S.begin()) {
                auto [y, z] = *prev(it);
                dp[z] = min(dp[z], dp[i] + Y[i] - y + X[R[z]] - X[R[i]]);
            }
        }
        ll ans = inf;
        for (int i = 0; i < M; i++) {
            if (R[i] == N - 1) {
                ans = min(ans, dp[i] + Y[i]);
            }
        }
        if (ans == inf) {
            ans = -1;
        }
        return ans;
    }
    map<pair<int, int>, int> mp;
    vector<pair<int, int>> p;
    for (int i = 0; i < N; i++) {
        mp[{X[i], 0}] = i;
        p.emplace_back(X[i], 0);
    }
    vector<vector<pair<int, int>>> adj(N);
    vector<tuple<int, int, int>> T(N + M);
    for (int i = 0; i < N; i++) {
        T[i] = {H[i], 1, i};
    }
    for (int i = 0; i < M; i++) {
        T[N + i] = {Y[i], 0, i};
    }
    sort(T.rbegin(), T.rend());
    set<int> S;
    int q;
    for (auto [y, t, k] : T) {
        if (t == 1) {
            S.insert(k);
        } else {
            q = -1;
            auto it = S.lower_bound(L[k]);
            while (it != S.end() && (*it) <= R[k]) {
                int z = *it, w; it++;
                if (!mp.count({X[z], y})) {
                    mp[{X[z], y}] = w = p.size();
                    p.emplace_back(X[z], y);
                    adj.push_back({});
                } else {
                    w = mp[{X[z], y}];
                }
                if (q != -1) {
                    adj[q].emplace_back(w, X[z] - p[q].first);
                    adj[w].emplace_back(q, X[z] - p[q].first);
                }
                q = w;
            }
        }
    }
    q = -1;
    for (auto [P, k] : mp) {
        auto [x, y] = P;
        if (q != -1 && p[q].first == x) {
            adj[k].emplace_back(q, y - p[q].second);
            adj[q].emplace_back(k, y - p[q].second);
        }
        q = k;
    }
    int K = adj.size();
    vector<ll> dis(K, -1);
    priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> pq;
    pq.emplace(0, s);
    while (!pq.empty()) {
        auto [d, x] = pq.top();
        pq.pop();
        if (dis[x] != -1) {
            continue;
        }
        dis[x] = d;
        for (auto [y, z] : adj[x]) {
            pq.emplace(d + z, y);
        }
    }
    return dis[g];
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 428 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 296 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 468 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1335 ms 129636 KB Output is correct
4 Correct 1217 ms 147656 KB Output is correct
5 Correct 740 ms 129112 KB Output is correct
6 Correct 631 ms 114916 KB Output is correct
7 Correct 706 ms 129220 KB Output is correct
8 Correct 1756 ms 165764 KB Output is correct
9 Correct 905 ms 125896 KB Output is correct
10 Correct 1757 ms 201984 KB Output is correct
11 Correct 636 ms 73208 KB Output is correct
12 Correct 415 ms 55456 KB Output is correct
13 Correct 1471 ms 177812 KB Output is correct
14 Correct 292 ms 53648 KB Output is correct
15 Correct 348 ms 55468 KB Output is correct
16 Correct 329 ms 56904 KB Output is correct
17 Correct 365 ms 54560 KB Output is correct
18 Correct 241 ms 58904 KB Output is correct
19 Correct 8 ms 2900 KB Output is correct
20 Correct 103 ms 27120 KB Output is correct
21 Correct 322 ms 51096 KB Output is correct
22 Correct 366 ms 54216 KB Output is correct
23 Correct 350 ms 69680 KB Output is correct
24 Correct 333 ms 54364 KB Output is correct
25 Correct 367 ms 52576 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 3156 KB Output is correct
2 Correct 71 ms 6364 KB Output is correct
3 Correct 78 ms 6712 KB Output is correct
4 Correct 92 ms 8092 KB Output is correct
5 Correct 120 ms 14924 KB Output is correct
6 Correct 106 ms 12360 KB Output is correct
7 Correct 45 ms 7088 KB Output is correct
8 Correct 55 ms 10132 KB Output is correct
9 Correct 102 ms 12576 KB Output is correct
10 Correct 79 ms 11816 KB Output is correct
11 Correct 10 ms 1844 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 3156 KB Output is correct
2 Correct 71 ms 6364 KB Output is correct
3 Correct 78 ms 6712 KB Output is correct
4 Correct 92 ms 8092 KB Output is correct
5 Correct 120 ms 14924 KB Output is correct
6 Correct 106 ms 12360 KB Output is correct
7 Correct 45 ms 7088 KB Output is correct
8 Correct 55 ms 10132 KB Output is correct
9 Correct 102 ms 12576 KB Output is correct
10 Correct 79 ms 11816 KB Output is correct
11 Correct 10 ms 1844 KB Output is correct
12 Execution timed out 4054 ms 465552 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 428 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 296 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1335 ms 129636 KB Output is correct
21 Correct 1217 ms 147656 KB Output is correct
22 Correct 740 ms 129112 KB Output is correct
23 Correct 631 ms 114916 KB Output is correct
24 Correct 706 ms 129220 KB Output is correct
25 Correct 1756 ms 165764 KB Output is correct
26 Correct 905 ms 125896 KB Output is correct
27 Correct 1757 ms 201984 KB Output is correct
28 Correct 636 ms 73208 KB Output is correct
29 Correct 415 ms 55456 KB Output is correct
30 Correct 1471 ms 177812 KB Output is correct
31 Correct 292 ms 53648 KB Output is correct
32 Correct 348 ms 55468 KB Output is correct
33 Correct 329 ms 56904 KB Output is correct
34 Correct 365 ms 54560 KB Output is correct
35 Correct 241 ms 58904 KB Output is correct
36 Correct 8 ms 2900 KB Output is correct
37 Correct 103 ms 27120 KB Output is correct
38 Correct 322 ms 51096 KB Output is correct
39 Correct 366 ms 54216 KB Output is correct
40 Correct 350 ms 69680 KB Output is correct
41 Correct 333 ms 54364 KB Output is correct
42 Correct 367 ms 52576 KB Output is correct
43 Correct 23 ms 3156 KB Output is correct
44 Correct 71 ms 6364 KB Output is correct
45 Correct 78 ms 6712 KB Output is correct
46 Correct 92 ms 8092 KB Output is correct
47 Correct 120 ms 14924 KB Output is correct
48 Correct 106 ms 12360 KB Output is correct
49 Correct 45 ms 7088 KB Output is correct
50 Correct 55 ms 10132 KB Output is correct
51 Correct 102 ms 12576 KB Output is correct
52 Correct 79 ms 11816 KB Output is correct
53 Correct 10 ms 1844 KB Output is correct
54 Execution timed out 4054 ms 465552 KB Time limit exceeded
55 Halted 0 ms 0 KB -