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Submission #522657

# Submission time Handle Problem Language Result Execution time Memory
522657 2022-02-05T10:27:28 Z maco1503 Sightseeing (NOI14_sightseeing) C++14
15 / 25
 3500 ms 98416 KB 
#include <bits/stdc++.h>
#define rpd ios_base :: sync_with_stdio(0); cin.tie(0);
#define ll long long
#define fs first
#define sc second
#define pb push_back
#define mod int(1e9)+7
#define NMAX 500000 + 5
#define inf INT_MAX

using namespace std;

ifstream in(".in");
ofstream out(".out");

set<pair<int,int> >s;
vector<pair<int, int> > g[NMAX];
int dist[NMAX];
void dij(){
    s.insert({1,-10000000});
    while(s.size()){
        auto st= *(s.begin());
        int mini= -(st.sc);
        int nod= st.fs;
        s.erase(s.begin());
        for(auto x:g[nod])
        {
            int vecin= x.fs;
            int cost= -(x.sc);
            if(min(cost,mini)>dist[vecin]){
                s.erase({vecin,-dist[vecin]});
                dist[vecin]=min(cost,mini);
                s.insert({vecin,-dist[vecin]});
            }
        }
    }
}

int main()
{
    rpd;
    int n,m,q;
    cin>>n>>m>>q;
    for(int i=1;i<=m;i++)
    {
        int a,b,c;
        cin>>a>>b>>c;
        g[a].pb({b,-c});
        g[b].pb({a,-c});
    }
    for(int i=1;i<=n;++i)
    {   dist[i] = 0;
        sort(g[i].begin() , g[i].end());
    }
    dij();
    while(q--)
    {
        int x;
        cin>>x;
        cout<<dist[x]<<'\n';

    }
    return 0;
}

/*
4 4 2
1 2 10
1 3 30
2 4 20
3 4 5
3
4
*/

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 11980 KB Output is correct
2 Correct 8 ms 11992 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12196 KB Output is correct
2 Correct 9 ms 12108 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 14368 KB Output is correct
2 Correct 82 ms 13892 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3566 ms 98416 KB Time limit exceeded
2 Halted 0 ms 0 KB -