Pagini recente » Cod sursa (job #679285) | Cod sursa (job #1134623) | Cod sursa (job #3173) | Cod sursa (job #2528407) | Cod sursa (job #2665727)
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream fin("bellmanford.in");
ofstream fout("bellmanford.out");
#define inf 2e9
#define lim 50010
int n,m,nod;
vector <pair <int,int>> G[lim];
int viz[lim],path[lim];
queue <int> q;
int main()
{
int x,y,c;
fin>>n>>m;
for (int i=1; i<=m; i++)
{
fin>>x>>y>>c;
G[x].push_back({y,c});
}
for (int i=2; i<=n; i++) path[i] = inf;
path[1] = 0;
q.push(1);
while (!q.empty())
{
nod = q.front();
q.pop();
viz[nod]++;
if (viz[nod] > n)
{
fout<<"Ciclu negativ!";
return 0;
}
for (auto it:G[nod])
if (path[it.first] > path[nod] + it.second)
{
path[it.first] = path[nod] + it.second;
q.push (it.first);
}
}
for (int i=2; i<=n; i++)
fout<<path[i]<<' ';
fin.close();
fout.close();
return 0;
}