Submission #321650

#	Time	Username	Problem	Language	Result	Execution time	Memory
321650		ishi_10	Sightseeing (NOI14_sightseeing)	C++14	0 / 25	3473 ms	262148 KiB

sightseeing

#include<iostream>
#include<cmath>
#include<bits/stdc++.h>
#include<string.h>
using namespace std;
typedef long long int ll;
const ll maxn=1e5+2;
const ll mod=100000000;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n,m,t;
    cin>>n>>m>>t;
    ll i,x,y,z;
    vector<pair<ll,ll>>adj[n+1];
    vector<ll>temp[n+1];
    for(i=0;i<m;i++)
    {
        cin>>x>>y>>z;
        adj[x].push_back({y,z});
        adj[y].push_back({x,z});
        temp[x].push_back(y);
        temp[y].push_back(x);
    }
    ll qua[n+1];
    for(i=1;i<=n;i++)
    {
        qua[i]=maxn;
    }
    ll visited[n+1]={0};
    ll f[n+1]={-1};
    queue<pair<ll,ll>>q;
    q.push({0,1});
    while(!q.empty())
    {
        ll a=q.front().second;
        q.pop();
        if(visited[a])
            continue;
        visited[a]=1;
        for(auto u: adj[a])
        {
            ll b=u.first;
            ll w=u.second;
            qua[b]=min(w,qua[a]);
            f[b]=max(f[b],qua[b]);
            q.push({-qua[b],b});
        }
    }
    /*for(i=1;i<=n;i++)
    {
        cout<<qua[i]<<" ";
    }
    cout<<"\n";
    for(i=1;i<=n;i++)
    {
        cout<<f[i]<<" ";
    }
    */
    for(i=0;i<t;i++)
    {
        ll ab;
        cin>>ab;
        cout<<f[ab]<<"\n";
    }
    cerr<<"\nTime elapsed:"<< 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
    return 0;
}

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