Submission #522627

#	Time	Username	Problem	Language	Result	Execution time	Memory
522627		Andy__Andy__	Sightseeing (NOI14_sightseeing)	C++17	15 / 25	3549 ms	177624 KiB

sightseeing

#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 (stderr)

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

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 6 / 6
• Subtask 4: 0 / 10