Pagini recente » Cod sursa (job #616151) | Cod sursa (job #453430) | Cod sursa (job #2249447) | Cod sursa (job #918093) | Cod sursa (job #903857)
Cod sursa(job #903857)
#include <fstream>
#include <vector>
const int inf = 2e9;
struct edge
{
int s,n,w;
};
using std::vector;
std::ifstream in("bellmanford.in");
std::ofstream out("bellmanford.out");
int N,M;
vector<edge> a;
vector<int> dist;
int main()
{
in >> N >> M;
for (int i = 0; i < M; ++i)
{
edge temp;
in >> temp.s >> temp.n >> temp.w;
a.push_back(temp);
}
dist.resize(N + 1,inf);
dist[1] = 0;
int k = 1;
while (k)
{
k = 0;
for (int i = 0; i < a.size(); ++i)
if ( dist[a[i].s] + a[i].w < dist[a[i].n] ) {
dist[a[i].n] = dist[a[i].s] + a[i].w;
++k;
}
}
for (int i = 0; i < a.size(); ++i)
if ( dist[a[i].s] + a[i].w < dist[a[i].n] ) {
out << "Ciclu negativ!"; return 0;
}
for (int i = 2; i <= N; ++i)
out << dist[i] << " ";
in.close();
out.close();
return 0;
}