Submission #522647

#	Time	Username	Problem	Language	Result	Execution time	Memory
522647		lucri	Sightseeing (NOI14_sightseeing)	C++17	4 / 25	865 ms	24328 KiB

sightseeing

#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;
int n,m,q,x,y,c,ans[500010];
vector<vector<pair<int,int>>>a;
priority_queue<pair<int,int>>b;
bool ok[500010];
void constructie(int nod)
{
    if(ok[nod]==true)
        return;
    ok[nod]=true;
    for(auto z:a[nod])
    {
        if(min(z.second,ans[nod])>ans[z.first])
        {
            ans[z.first]=min(z.second,ans[nod]);
            b.push(make_pair(ans[z.first],z.first));
        }
    }
    if(b.empty())
        return;
    int a=b.top().second;
    b.pop();
    constructie(a);
    return;
}
int main()
{
    cin>>n>>m>>q;
    a.resize(n+5);
    for(int i=1;i<=n;++i)
    {
        cin>>x>>y>>c;
        a[x].push_back(make_pair(y,c));
        a[y].push_back(make_pair(x,c));
    }
    ans[1]=100001;
    constructie(1);
    ans[1]=0;
    for(int i=1;i<=q;++i)
    {
        cin>>x;
        cout<<ans[x]<<'\n';
    }
    return 0;
}

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