Submission #488213

#	Time	Username	Problem	Language	Result	Execution time	Memory
488213		levsog2004	Evacuation plan (IZhO18_plan)	C++14	10 / 100	4049 ms	21552 KiB

plan

#include <iostream>
#include <iomanip>
#include <fstream>
#include <algorithm>
#include <cstring>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <cmath>
#include <list>
#include <set>
#include <map>
using namespace std;
typedef  int  ll;
#define all(x) x.begin(),x.end()
#define al(a,n)  (a,a+n)
#define se second
#define fr first
#define m_p make_pair
const ll N = 100005;
const ll mod = 1000 * 1000 * 1000 + 7;
const ll inf = 1000000009;
ll n, m, k, z, t, x, y, ans, pat, a[N],dist[N];
vector<pair<ll, ll>> g[N];
pair<ll, ll> p;
int main()
{
	cin >> n >> m;
	for (int i = 0; i < m; ++i)
	{
		cin >> x >> y >> z;
		g[x].push_back({ y,z });
		g[y].push_back({ x,z });

	}
	cin >> k;
	for (int i = 0; i < k; ++i)
	{
		cin >> a[i];
	}
	
	for (int i = 1; i <= n; i++)
		dist[i] = mod;
	for (int jj = 0; jj < k; ++jj)
	{
		priority_queue<pair<ll, ll>> pq;
		dist[a[jj]] = 0;
		map <ll, bool> color;
		pq.push(m_p(0, a[jj]));
		ll min_i;
		for (int i = 0; i < m; i++)
		{
			while (!pq.empty())
			{
				p = pq.top();
				pq.pop();
				if (color[p.second]!=true)
				{
					min_i = p.second;
					break;
				}
			}
			color[min_i] = true;
			y = g[min_i].size();
			for (int j = 0; j < y; j++)
			{
				int h = g[min_i][j].first;
				int d = g[min_i][j].second;
				if (!color[h] && dist[h] > dist[min_i] + d)
				{
					dist[h] = dist[min_i] + d;
					pq.push(m_p(-dist[h], h));
				}
			}
		}
	}
	cin >> ans;
	for (int i = 0; i < ans; ++i)
	{
		cin >> x >> y;
		cout << min(dist[x], dist[y]) << endl;
	}
	return 0;
}

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