oj.uz

Submission #366601

# Submission time Handle Problem Language Result Execution time Memory
366601 2021-02-14T19:18:45 Z arbor Commuter Pass (JOI18_commuter_pass) C++17
100 / 100
 449 ms 26884 KB 
#include <bits/stdc++.h>
#define all(x) begin(x), end(x)
#define sz(x) int((x).size())
#define eb emplace_back
#define pb push_back
using namespace std;
using ll = long long;
using pii = pair<ll, int>;
using vi = vector<int>;
const int MN = 1e5 + 5;
int N, M, S, T, A, B; // stab O_O
vector<pii> g[MN];
ll disA[MN], disB[MN], disS[MN], disT[MN];
ll dp[MN][4];

void dijk(ll *dis, int st) {
    for (int i = 1; i <= N; i++) dis[i] = 1e18;
    dis[st] = 0;
    priority_queue<pii, vector<pii>, greater<>> q;
    q.emplace(0, st);
    while (!q.empty()) {
        auto [d, u] = q.top(); q.pop();
        if (d > dis[u]) continue;
        for (auto [v, w] : g[u]) {
            if (dis[v] > dis[u] + w) {
                dis[v] = dis[u] + w;
                q.emplace(dis[v], v);
            }
        }
    }
}

int main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    cin >> N >> M >> S >> T >> A >> B;
    for (int i = 0; i < M; i++) {
        int u, v, w; cin >> u >> v >> w;
        g[u].eb(v, w), g[v].eb(u, w);
    }
    dijk(disS, S), dijk(disT, T), dijk(disA, A), dijk(disB, B);
    vector<pii> v;
    for (int i = 1; i <= N; i++) {
        v.eb(disS[i], i);
        for (int j = 0; j <= 3; j++) dp[i][j] = 1e18;
    }
    sort(all(v));
    ll mn = disS[T], ans = disA[B];
    for (auto [d, u] : v) {
        dp[u][1] = min(dp[u][1], disA[u]);
        dp[u][2] = min(dp[u][2], disB[u]);
        for (auto [v, w] : g[u]) {
            if (d + w + disT[v] == mn) {
                dp[v][1] = min(dp[v][1], dp[u][1]);
                dp[v][2] = min(dp[v][2], dp[u][2]);
                dp[v][3] = min(dp[v][3], dp[v][1] + disB[v]);
                dp[v][3] = min(dp[v][3], dp[v][2] + disA[v]);
                ans = min(ans, dp[v][3]);
            }
        }
    }
    cout << ans << '\n';
    return 0;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 23032 KB Output is correct
2 Correct 369 ms 24840 KB Output is correct
3 Correct 449 ms 26716 KB Output is correct
4 Correct 353 ms 26844 KB Output is correct
5 Correct 420 ms 24980 KB Output is correct
6 Correct 397 ms 26876 KB Output is correct
7 Correct 378 ms 24820 KB Output is correct
8 Correct 363 ms 24788 KB Output is correct
9 Correct 368 ms 25712 KB Output is correct
10 Correct 339 ms 25804 KB Output is correct
11 Correct 160 ms 18012 KB Output is correct
12 Correct 391 ms 25716 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 402 ms 21572 KB Output is correct
2 Correct 391 ms 24816 KB Output is correct
3 Correct 442 ms 25092 KB Output is correct
4 Correct 402 ms 24952 KB Output is correct
5 Correct 425 ms 25044 KB Output is correct
6 Correct 332 ms 25004 KB Output is correct
7 Correct 390 ms 24824 KB Output is correct
8 Correct 374 ms 24856 KB Output is correct
9 Correct 440 ms 24956 KB Output is correct
10 Correct 363 ms 24988 KB Output is correct
11 Correct 153 ms 18012 KB Output is correct
12 Correct 424 ms 25152 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 4076 KB Output is correct
2 Correct 4 ms 2796 KB Output is correct
3 Correct 3 ms 2796 KB Output is correct
4 Correct 20 ms 6252 KB Output is correct
5 Correct 11 ms 4460 KB Output is correct
6 Correct 3 ms 2796 KB Output is correct
7 Correct 3 ms 2924 KB Output is correct
8 Correct 4 ms 3052 KB Output is correct
9 Correct 3 ms 2944 KB Output is correct
10 Correct 11 ms 4460 KB Output is correct
11 Correct 2 ms 2796 KB Output is correct
12 Correct 4 ms 2944 KB Output is correct
13 Correct 3 ms 2796 KB Output is correct
14 Correct 4 ms 2944 KB Output is correct
15 Correct 4 ms 2796 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 384 ms 23032 KB Output is correct
2 Correct 369 ms 24840 KB Output is correct
3 Correct 449 ms 26716 KB Output is correct
4 Correct 353 ms 26844 KB Output is correct
5 Correct 420 ms 24980 KB Output is correct
6 Correct 397 ms 26876 KB Output is correct
7 Correct 378 ms 24820 KB Output is correct
8 Correct 363 ms 24788 KB Output is correct
9 Correct 368 ms 25712 KB Output is correct
10 Correct 339 ms 25804 KB Output is correct
11 Correct 160 ms 18012 KB Output is correct
12 Correct 391 ms 25716 KB Output is correct
13 Correct 402 ms 21572 KB Output is correct
14 Correct 391 ms 24816 KB Output is correct
15 Correct 442 ms 25092 KB Output is correct
16 Correct 402 ms 24952 KB Output is correct
17 Correct 425 ms 25044 KB Output is correct
18 Correct 332 ms 25004 KB Output is correct
19 Correct 390 ms 24824 KB Output is correct
20 Correct 374 ms 24856 KB Output is correct
21 Correct 440 ms 24956 KB Output is correct
22 Correct 363 ms 24988 KB Output is correct
23 Correct 153 ms 18012 KB Output is correct
24 Correct 424 ms 25152 KB Output is correct
25 Correct 11 ms 4076 KB Output is correct
26 Correct 4 ms 2796 KB Output is correct
27 Correct 3 ms 2796 KB Output is correct
28 Correct 20 ms 6252 KB Output is correct
29 Correct 11 ms 4460 KB Output is correct
30 Correct 3 ms 2796 KB Output is correct
31 Correct 3 ms 2924 KB Output is correct
32 Correct 4 ms 3052 KB Output is correct
33 Correct 3 ms 2944 KB Output is correct
34 Correct 11 ms 4460 KB Output is correct
35 Correct 2 ms 2796 KB Output is correct
36 Correct 4 ms 2944 KB Output is correct
37 Correct 3 ms 2796 KB Output is correct
38 Correct 4 ms 2944 KB Output is correct
39 Correct 4 ms 2796 KB Output is correct
40 Correct 346 ms 26328 KB Output is correct
41 Correct 405 ms 25644 KB Output is correct
42 Correct 366 ms 25620 KB Output is correct
43 Correct 178 ms 18140 KB Output is correct
44 Correct 193 ms 18140 KB Output is correct
45 Correct 352 ms 24840 KB Output is correct
46 Correct 349 ms 24492 KB Output is correct
47 Correct 376 ms 26884 KB Output is correct
48 Correct 178 ms 17500 KB Output is correct
49 Correct 321 ms 25944 KB Output is correct
50 Correct 340 ms 25124 KB Output is correct
51 Correct 348 ms 24808 KB Output is correct