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Submission #522627

# Submission time Handle Problem Language Result Execution time Memory
522627 2022-02-05T09:38:46 Z Andy__Andy__ Sightseeing (NOI14_sightseeing) C++17
15 / 25
 3500 ms 177624 KB 
#include <bits/stdc++.h>
#define ll long long
#define int ll
using namespace std;

ifstream f ("test.in");
ofstream g ("test.out");
int teste=1;
int n,m,q;
int dp[500005];
vector < array < int ,2 > > G[500005];

set < array < int ,2 > > s;

void calc()
{
    s.insert({-(100000000),1});

    while(s.size())
    {
        auto marcel = *(s.begin());
        int mnDrum= -marcel[0];
        int nod  = marcel[1];

        s.erase(s.begin());

        for(auto x:G[nod])
        {
            int vecin = x[1];
            int costDrum = -x[0];

            if(min(costDrum,mnDrum) > dp[vecin])
            {
                s.erase({-dp[vecin],vecin});
                dp[vecin] = min(costDrum,mnDrum);
                s.insert({-dp[vecin],vecin});
            }
        }
    }
}


void solve()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>m>>q;

    for(int i=1;i<=m;++i)
    {
        int a,b,c;
        cin>>a>>b>>c;
        G[a].push_back({-c,b});
        G[b].push_back({-c,a});
    }

    for(int i=1;i<=n;++i)
    {   dp[i] = 0;
        sort(G[i].begin() , G[i].end());
    }
    calc();

    for(;q--;)
    {
        int x;
        cin>>x;
        cout<<dp[x]<< '\n';
    }



}


main()
{
    while(teste--)
    {
        solve();
    }

    return 0;
}

Compilation message

sightseeing.cpp:77:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   77 | main()
      | ^~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 6 ms 12072 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12236 KB Output is correct
2 Correct 7 ms 12080 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 15552 KB Output is correct
2 Correct 35 ms 14860 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3549 ms 177624 KB Time limit exceeded
2 Halted 0 ms 0 KB -