oj.uz

Submission #539426

# Submission time Handle Problem Language Result Execution time Memory
539426 2022-03-18T21:42:41 Z Antekb Commuter Pass (JOI18_commuter_pass) C++14
100 / 100
 612 ms 23132 KB 
#include<bits/stdc++.h>
#define st first
#define nd second
using namespace std;
using ll=long long;
const int N=1e5+5;
const ll INF=1e18;
vector<pair<int, int> > E[N];
int n;
vector<ll> dij(int s){
    vector<ll> dist(n+1, INF);
    vector<bool> vis(n+1);
    dist[s]=0;
    priority_queue<pair<ll, int> > Q;
    for(int i=1; i<=n; i++){
        Q.push({-dist[i], i});
    }
    while(Q.size()){
        //cout<<"a";
        int v=Q.top().nd;
        Q.pop();
        if(vis[v])continue;
        vis[v]=1;
        for(auto u:E[v]){
            if(dist[v]+u.nd<dist[u.st]){
                dist[u.st]=dist[v]+u.nd;
                Q.push({-dist[u.st], u.st});
            }
        }
    }
    return dist;
}
vector<ll> ds,dt,du,dv;
ll opt[N];
int main(){
    int m;
    cin>>n>>m;
    int s, t;
    int U, V;
    cin>>s>>t>>U>>V;
    for(int i=0; i<m; i++){
        int u, v, w;
        cin>>u>>v>>w;
        E[u].push_back({v, w});
        E[v].push_back({u, w});
    }
    ds=dij(s), dt=dij(t), du=dij(U), dv=dij(V);
    //for(auto i:ds)cout<<i<<" ";
    ll ans=du[V];
    vector<int> kol(n);
    for(int i=0; i<n; i++)kol[i]=i+1;
    sort(kol.begin(), kol.end(), [](int a, int b){return ds[a]<ds[b];});
    for(int i=1; i<=n; i++)opt[i]=du[i];
    for(int v:kol){
        for(auto u:E[v]){
            if(dt[v]+ds[u.st]+u.nd==ds[t]){
                opt[v]=min(opt[v], opt[u.st]);
            }
        }
        if(dt[v]+ds[v]==ds[t])ans=min(ans, opt[v]+dv[v]);
    }
    //reverse(kol.begin(), kol.end());
    for(int i=1; i<=n; i++)opt[i]=dv[i];
    for(int v:kol){
        for(auto u:E[v]){
            if(dt[v]+ds[u.st]+u.nd==ds[t]){
                opt[v]=min(opt[v], opt[u.st]);
            }
        }
        //cout<<v<<" "<<opt[v]<<"\n";
        if(dt[v]+ds[v]==ds[t])ans=min(ans, opt[v]+du[v]);
    }
    cout<<ans;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 533 ms 22856 KB Output is correct
2 Correct 506 ms 22084 KB Output is correct
3 Correct 514 ms 22084 KB Output is correct
4 Correct 546 ms 22576 KB Output is correct
5 Correct 490 ms 22072 KB Output is correct
6 Correct 612 ms 22668 KB Output is correct
7 Correct 576 ms 21832 KB Output is correct
8 Correct 508 ms 21984 KB Output is correct
9 Correct 525 ms 22888 KB Output is correct
10 Correct 497 ms 22944 KB Output is correct
11 Correct 289 ms 14596 KB Output is correct
12 Correct 521 ms 22696 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 537 ms 22340 KB Output is correct
2 Correct 548 ms 22244 KB Output is correct
3 Correct 541 ms 22040 KB Output is correct
4 Correct 569 ms 21936 KB Output is correct
5 Correct 584 ms 22084 KB Output is correct
6 Correct 527 ms 22204 KB Output is correct
7 Correct 525 ms 22232 KB Output is correct
8 Correct 527 ms 22052 KB Output is correct
9 Correct 585 ms 22024 KB Output is correct
10 Correct 534 ms 22052 KB Output is correct
11 Correct 290 ms 14544 KB Output is correct
12 Correct 514 ms 22512 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 3736 KB Output is correct
2 Correct 2 ms 2672 KB Output is correct
3 Correct 3 ms 2644 KB Output is correct
4 Correct 40 ms 4812 KB Output is correct
5 Correct 23 ms 3644 KB Output is correct
6 Correct 3 ms 2772 KB Output is correct
7 Correct 6 ms 2772 KB Output is correct
8 Correct 5 ms 2800 KB Output is correct
9 Correct 3 ms 2772 KB Output is correct
10 Correct 21 ms 3668 KB Output is correct
11 Correct 3 ms 2644 KB Output is correct
12 Correct 2 ms 2664 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 3 ms 2676 KB Output is correct
15 Correct 3 ms 2644 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 533 ms 22856 KB Output is correct
2 Correct 506 ms 22084 KB Output is correct
3 Correct 514 ms 22084 KB Output is correct
4 Correct 546 ms 22576 KB Output is correct
5 Correct 490 ms 22072 KB Output is correct
6 Correct 612 ms 22668 KB Output is correct
7 Correct 576 ms 21832 KB Output is correct
8 Correct 508 ms 21984 KB Output is correct
9 Correct 525 ms 22888 KB Output is correct
10 Correct 497 ms 22944 KB Output is correct
11 Correct 289 ms 14596 KB Output is correct
12 Correct 521 ms 22696 KB Output is correct
13 Correct 537 ms 22340 KB Output is correct
14 Correct 548 ms 22244 KB Output is correct
15 Correct 541 ms 22040 KB Output is correct
16 Correct 569 ms 21936 KB Output is correct
17 Correct 584 ms 22084 KB Output is correct
18 Correct 527 ms 22204 KB Output is correct
19 Correct 525 ms 22232 KB Output is correct
20 Correct 527 ms 22052 KB Output is correct
21 Correct 585 ms 22024 KB Output is correct
22 Correct 534 ms 22052 KB Output is correct
23 Correct 290 ms 14544 KB Output is correct
24 Correct 514 ms 22512 KB Output is correct
25 Correct 21 ms 3736 KB Output is correct
26 Correct 2 ms 2672 KB Output is correct
27 Correct 3 ms 2644 KB Output is correct
28 Correct 40 ms 4812 KB Output is correct
29 Correct 23 ms 3644 KB Output is correct
30 Correct 3 ms 2772 KB Output is correct
31 Correct 6 ms 2772 KB Output is correct
32 Correct 5 ms 2800 KB Output is correct
33 Correct 3 ms 2772 KB Output is correct
34 Correct 21 ms 3668 KB Output is correct
35 Correct 3 ms 2644 KB Output is correct
36 Correct 2 ms 2664 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 3 ms 2676 KB Output is correct
39 Correct 3 ms 2644 KB Output is correct
40 Correct 579 ms 23132 KB Output is correct
41 Correct 524 ms 22776 KB Output is correct
42 Correct 573 ms 22836 KB Output is correct
43 Correct 319 ms 14556 KB Output is correct
44 Correct 300 ms 14548 KB Output is correct
45 Correct 479 ms 20944 KB Output is correct
46 Correct 462 ms 21400 KB Output is correct
47 Correct 521 ms 22524 KB Output is correct
48 Correct 275 ms 14084 KB Output is correct
49 Correct 454 ms 22684 KB Output is correct
50 Correct 486 ms 21836 KB Output is correct
51 Correct 515 ms 21588 KB Output is correct