Submission #565813

#	Time	Username	Problem	Language	Result	Execution time	Memory
565813		Rifal	Evacuation plan (IZhO18_plan)	C++14	10 / 100	76 ms	468 KiB

plan

#include <bits/stdc++.h>
#include <fstream>
#define endl '\n'
#define mod 32768
#define INF 100000000000000
//#define ll long long
//#define cin fin
//#define cout fout
using namespace std;
//ofstream fout("convention.out");
//ifstream fin("convention.in");
const int M = 1e3 + 5;
long long arr[M];
long long dist[M];
vector<pair<int,long long>> v[M];
void d(int s)
{
    for(int i = 0; i < M; i++)
    {
        arr[i] = INF;
    }
    arr[s] = 0;
    priority_queue<pair<long long,int>, vector<pair<long long, int>>, greater<pair<long long,int>>> pq;
    pq.push({arr[s],s});
    while(!pq.empty())
    {
        pair<long long,int> tp = pq.top();
        pq.pop();
        if(arr[tp.second] < tp.first)
            continue;

        for(auto i : v[tp.second])
        {
            if(arr[tp.second]+i.second < arr[i.first])
            {
                arr[i.first] = arr[tp.second]+i.second;
                dist[i.first] = min(dist[i.first],arr[i.first]);
                pq.push({arr[i.first],i.first});
            }
        }
    }
}
int main()
{
    int n, m, k, q;
    cin >> n >> m;
    for(int i = 0; i <= n; i++){
        dist[i] = INF;
    }
    for(int i = 0; i < m; i++)
    {
        int a, b, c;
        cin >> a >> b >> c;
        v[a].push_back({b,c});
        v[b].push_back({a,c});
    }
    cin >> k;
    int a[k];
    for(int i = 0; i < k; i++)
    {
        cin >> a[i];
        d(a[i]);
        dist[a[i]] = 0;
    }

    cin >> q;
    while(q--)
    {
        int s, t;
        cin >> s >> t;
        cout << min(dist[s],dist[t]) << endl;
    }

    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 46