oj.uz

Submission #679309

# Submission time Handle Problem Language Result Execution time Memory
679309 2023-01-08T02:51:59 Z hotboy2703 Commuter Pass (JOI18_commuter_pass) C++14
100 / 100
 362 ms 28624 KB 
#include<bits/stdc++.h>
using namespace std;
long long n,m;
vector <pair <long long,long long> > g[100100];
vector <pair <long long,long long> > gg[100100];
long long dists[100100],distv[100100],distu[100100];
void dijkstra(long long dist[],long long s){
    memset(dist,0x3f, sizeof (long long) * (n + 10));
    dist[s] = 0;
    priority_queue <pair <long long,long long> ,vector <pair <long long,long long> > ,greater <pair <long long,long long > > >  q;
    for (long long i = 1;i <= n; i++){
        q.push({dist[i],i});
    }
    while (!q.empty()){
        long long u = q.top().second;
        long long val = q.top().first;
        q.pop();
        if (val != dist[u])continue;
        for (auto tmp:g[u]){
            long long v = tmp.first;
            long long len = tmp.second;
            if (dist[v] > dist[u] + len){
                dist[v] = dist[u] + len;
                q.push({dist[v],v});
            }
        }
    }
}
bool in[100100];
long long dp[2][100100];
void dfs(long long u){
    dp[0][u] = distu[u];
    dp[1][u] = distv[u];
    in[u] = 1;
    for (auto v:g[u]){
        if (dists[v.first] + v.second == dists[u]){
            if (!in[v.first]){
                dfs(v.first);
            }
            dp[0][u] = min(dp[0][u],dp[0][v.first]);
            dp[1][u] = min(dp[1][u],dp[1][v.first]);
        }
    }
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(nullptr);cout.tie(nullptr);
    cin>>n>>m;
    long long s,t,u,v;
    cin>>s>>t>>u>>v;
    for (long long i = 1;i <= m;i ++){
        long long uu,vv,w;
        cin>>uu>>vv>>w;
        g[uu].push_back({vv,w});
        g[vv].push_back({uu,w});
    }
    dijkstra(dists,s);
    dijkstra(distu,u);
    dijkstra(distv,v);
    dfs(t);
    long long ans = distu[v];
    for (long long i = 1;i <= n;i ++){
        if (in[i]){
            ans = min(ans,dp[0][i] + distv[i]);
            ans = min(ans,dp[1][i] + distu[i]);
        }
    }
    cout<<ans<<'\n';
    return 0;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 24484 KB Output is correct
2 Correct 278 ms 24360 KB Output is correct
3 Correct 288 ms 24596 KB Output is correct
4 Correct 311 ms 24404 KB Output is correct
5 Correct 271 ms 24236 KB Output is correct
6 Correct 319 ms 24548 KB Output is correct
7 Correct 283 ms 24188 KB Output is correct
8 Correct 280 ms 24224 KB Output is correct
9 Correct 256 ms 24180 KB Output is correct
10 Correct 248 ms 28472 KB Output is correct
11 Correct 190 ms 19688 KB Output is correct
12 Correct 269 ms 28416 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 362 ms 24408 KB Output is correct
2 Correct 286 ms 24348 KB Output is correct
3 Correct 319 ms 24304 KB Output is correct
4 Correct 281 ms 24308 KB Output is correct
5 Correct 273 ms 24280 KB Output is correct
6 Correct 304 ms 24140 KB Output is correct
7 Correct 293 ms 24616 KB Output is correct
8 Correct 288 ms 24272 KB Output is correct
9 Correct 291 ms 24244 KB Output is correct
10 Correct 285 ms 24216 KB Output is correct
11 Correct 227 ms 19440 KB Output is correct
12 Correct 285 ms 28260 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 6356 KB Output is correct
2 Correct 4 ms 5076 KB Output is correct
3 Correct 3 ms 5076 KB Output is correct
4 Correct 17 ms 8536 KB Output is correct
5 Correct 10 ms 6740 KB Output is correct
6 Correct 4 ms 5076 KB Output is correct
7 Correct 4 ms 5204 KB Output is correct
8 Correct 5 ms 5332 KB Output is correct
9 Correct 3 ms 5168 KB Output is correct
10 Correct 8 ms 6740 KB Output is correct
11 Correct 3 ms 5032 KB Output is correct
12 Correct 3 ms 5036 KB Output is correct
13 Correct 3 ms 5076 KB Output is correct
14 Correct 4 ms 5044 KB Output is correct
15 Correct 3 ms 5172 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 276 ms 24484 KB Output is correct
2 Correct 278 ms 24360 KB Output is correct
3 Correct 288 ms 24596 KB Output is correct
4 Correct 311 ms 24404 KB Output is correct
5 Correct 271 ms 24236 KB Output is correct
6 Correct 319 ms 24548 KB Output is correct
7 Correct 283 ms 24188 KB Output is correct
8 Correct 280 ms 24224 KB Output is correct
9 Correct 256 ms 24180 KB Output is correct
10 Correct 248 ms 28472 KB Output is correct
11 Correct 190 ms 19688 KB Output is correct
12 Correct 269 ms 28416 KB Output is correct
13 Correct 362 ms 24408 KB Output is correct
14 Correct 286 ms 24348 KB Output is correct
15 Correct 319 ms 24304 KB Output is correct
16 Correct 281 ms 24308 KB Output is correct
17 Correct 273 ms 24280 KB Output is correct
18 Correct 304 ms 24140 KB Output is correct
19 Correct 293 ms 24616 KB Output is correct
20 Correct 288 ms 24272 KB Output is correct
21 Correct 291 ms 24244 KB Output is correct
22 Correct 285 ms 24216 KB Output is correct
23 Correct 227 ms 19440 KB Output is correct
24 Correct 285 ms 28260 KB Output is correct
25 Correct 12 ms 6356 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 17 ms 8536 KB Output is correct
29 Correct 10 ms 6740 KB Output is correct
30 Correct 4 ms 5076 KB Output is correct
31 Correct 4 ms 5204 KB Output is correct
32 Correct 5 ms 5332 KB Output is correct
33 Correct 3 ms 5168 KB Output is correct
34 Correct 8 ms 6740 KB Output is correct
35 Correct 3 ms 5032 KB Output is correct
36 Correct 3 ms 5036 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 4 ms 5044 KB Output is correct
39 Correct 3 ms 5172 KB Output is correct
40 Correct 284 ms 28236 KB Output is correct
41 Correct 291 ms 28624 KB Output is correct
42 Correct 290 ms 28484 KB Output is correct
43 Correct 186 ms 20384 KB Output is correct
44 Correct 195 ms 20396 KB Output is correct
45 Correct 259 ms 26804 KB Output is correct
46 Correct 259 ms 27100 KB Output is correct
47 Correct 292 ms 28168 KB Output is correct
48 Correct 149 ms 17772 KB Output is correct
49 Correct 230 ms 27864 KB Output is correct
50 Correct 283 ms 27592 KB Output is correct
51 Correct 251 ms 27340 KB Output is correct