Cod sursa(job #1731976)

Utilizator GabiTulbaGabi Tulba-Lecu GabiTulba Data 20 iulie 2016 15:28:09
Problema Algoritmul lui Dijkstra Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.93 kb
#include <cstdio>
#include <vector>
#include <queue>
#include <algorithm>
#define INF 2000000000
#define MaxN 100001
using namespace std;

int N,M,v[MaxN]={},start,final,val;
vector<pair<int,int>>List[MaxN];
queue<int>Queue;
int main()
{
    freopen("dijkstra.in","r",stdin);
    freopen("dijkstra.out","w",stdout);
	scanf("%d%d",&N,&M);
	for(int i=1;i<=N;i++)
		v[i]=INF;
	v[1]=0;
	Queue.push(1);
	for(int i=1;i<=M;i++)
	{
		scanf("%d%d%d",&start,&final,&val);
		List[start].push_back(make_pair(final,val));
	}
	while(!Queue.empty())
	{
		for(int i=0;i<List[Queue.front()].size();i++)
			if(v[List[Queue.front()][i].first]>v[Queue.front()]+List[Queue.front()][i].second)
				Queue.push(List[Queue.front()][i].first),v[List[Queue.front()][i].first]=v[Queue.front()]+List[Queue.front()][i].second;
		Queue.pop();
	}
	for(int i=2;i<=N;i++)
		if(v[i]==INF)
			printf("0 ");
		else
		printf("%d ",v[i]);
    return 0;
}