oj.uz

Submission #544911

# Submission time Handle Problem Language Result Execution time Memory
544911 2022-04-03T06:32:35 Z pokmui9909 Commuter Pass (JOI18_commuter_pass) C++17
100 / 100
 389 ms 23200 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define x first
#define y second
ll N, M, S, T, U, V;
vector<pair<ll, ll>>  G[100005];
ll dpU[100005], dpV[100005];
vector<ll> insp;
vector<ll> dS, dT, dU, dV;
const ll INF = 1e18;
vector<ll> dijkstra(ll s){
    vector<ll> d(N, INF);
    priority_queue<pair<ll, ll>> PQ;
    d[s] = 0; PQ.push({0, s});
    while(!PQ.empty()){
        ll c = -PQ.top().x, u = PQ.top().y; PQ.pop();
        for(auto i : G[u]){
            ll v = i.x, nc = c + i.y;
            if(d[v] <= nc) continue;
            d[v] = nc;
            PQ.push({-nc, v});
        }
    }
    return d;
}

int main(){
    cin.tie(0) -> sync_with_stdio(false);

    cin >> N >> M >> S >> T >> U >> V;
    S--, T--, U--, V--;
    for(int i = 0; i < M; i++){
        ll u, v, c; cin >> u >> v >> c;
        u--, v--;
        G[u].push_back({v, c});
        G[v].push_back({u, c});
    }
    dS = dijkstra(S), dT = dijkstra(T), dU = dijkstra(U), dV = dijkstra(V);
    for(int i = 0; i < N; i++){
        if(dS[i] + dT[i] == dS[T]){
            insp.push_back(i);
        }
    }
    sort(insp.begin(), insp.end(), [&](ll a, ll b) -> bool{return dS[a] < dS[b];});
    fill(dpU, dpU + N, INF);
    for(auto u : insp) dpU[u] = dU[u];
    for(auto u : insp){
        for(auto i : G[u]){
            ll v = i.x;
            if(dS[v] + dT[v] != dS[T] || dS[u] > dS[v]) continue;
            dpU[v] = min(dpU[v], dpU[u]);
        }
    }
    fill(dpV, dpV + N, INF);
    for(auto u : insp) dpV[u] = dV[u];
    for(auto u : insp){
        for(auto i : G[u]){
            ll v = i.x;
            if(dS[v] + dT[v] != dS[T] || dS[u] > dS[v]) continue;
            dpV[v] = min(dpV[v], dpV[u]);
        }
    }
    ll ans = dU[V];
    for(auto i : insp){
        ans = min({ans, dpU[i] + dV[i], dpV[i] + dU[i]});
    }
    cout << ans;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 309 ms 23112 KB Output is correct
2 Correct 325 ms 21844 KB Output is correct
3 Correct 373 ms 23104 KB Output is correct
4 Correct 264 ms 23056 KB Output is correct
5 Correct 303 ms 22104 KB Output is correct
6 Correct 329 ms 23200 KB Output is correct
7 Correct 345 ms 22192 KB Output is correct
8 Correct 335 ms 22080 KB Output is correct
9 Correct 300 ms 22508 KB Output is correct
10 Correct 255 ms 22288 KB Output is correct
11 Correct 109 ms 15028 KB Output is correct
12 Correct 326 ms 22140 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 327 ms 21832 KB Output is correct
2 Correct 386 ms 21896 KB Output is correct
3 Correct 330 ms 21676 KB Output is correct
4 Correct 389 ms 21692 KB Output is correct
5 Correct 335 ms 22068 KB Output is correct
6 Correct 357 ms 22348 KB Output is correct
7 Correct 352 ms 22692 KB Output is correct
8 Correct 377 ms 21816 KB Output is correct
9 Correct 335 ms 22032 KB Output is correct
10 Correct 331 ms 21660 KB Output is correct
11 Correct 167 ms 15500 KB Output is correct
12 Correct 306 ms 22552 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 4436 KB Output is correct
2 Correct 3 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 15 ms 6100 KB Output is correct
5 Correct 9 ms 4348 KB Output is correct
6 Correct 2 ms 2772 KB Output is correct
7 Correct 3 ms 2772 KB Output is correct
8 Correct 3 ms 2900 KB Output is correct
9 Correct 2 ms 2772 KB Output is correct
10 Correct 9 ms 4380 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2676 KB Output is correct
13 Correct 2 ms 2684 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 2 ms 2688 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 309 ms 23112 KB Output is correct
2 Correct 325 ms 21844 KB Output is correct
3 Correct 373 ms 23104 KB Output is correct
4 Correct 264 ms 23056 KB Output is correct
5 Correct 303 ms 22104 KB Output is correct
6 Correct 329 ms 23200 KB Output is correct
7 Correct 345 ms 22192 KB Output is correct
8 Correct 335 ms 22080 KB Output is correct
9 Correct 300 ms 22508 KB Output is correct
10 Correct 255 ms 22288 KB Output is correct
11 Correct 109 ms 15028 KB Output is correct
12 Correct 326 ms 22140 KB Output is correct
13 Correct 327 ms 21832 KB Output is correct
14 Correct 386 ms 21896 KB Output is correct
15 Correct 330 ms 21676 KB Output is correct
16 Correct 389 ms 21692 KB Output is correct
17 Correct 335 ms 22068 KB Output is correct
18 Correct 357 ms 22348 KB Output is correct
19 Correct 352 ms 22692 KB Output is correct
20 Correct 377 ms 21816 KB Output is correct
21 Correct 335 ms 22032 KB Output is correct
22 Correct 331 ms 21660 KB Output is correct
23 Correct 167 ms 15500 KB Output is correct
24 Correct 306 ms 22552 KB Output is correct
25 Correct 9 ms 4436 KB Output is correct
26 Correct 3 ms 2644 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 15 ms 6100 KB Output is correct
29 Correct 9 ms 4348 KB Output is correct
30 Correct 2 ms 2772 KB Output is correct
31 Correct 3 ms 2772 KB Output is correct
32 Correct 3 ms 2900 KB Output is correct
33 Correct 2 ms 2772 KB Output is correct
34 Correct 9 ms 4380 KB Output is correct
35 Correct 2 ms 2644 KB Output is correct
36 Correct 2 ms 2676 KB Output is correct
37 Correct 2 ms 2684 KB Output is correct
38 Correct 2 ms 2688 KB Output is correct
39 Correct 2 ms 2688 KB Output is correct
40 Correct 276 ms 23044 KB Output is correct
41 Correct 296 ms 22284 KB Output is correct
42 Correct 269 ms 22344 KB Output is correct
43 Correct 166 ms 15532 KB Output is correct
44 Correct 154 ms 15544 KB Output is correct
45 Correct 274 ms 22884 KB Output is correct
46 Correct 336 ms 22736 KB Output is correct
47 Correct 265 ms 23180 KB Output is correct
48 Correct 193 ms 15100 KB Output is correct
49 Correct 233 ms 22620 KB Output is correct
50 Correct 303 ms 22824 KB Output is correct
51 Correct 315 ms 22976 KB Output is correct