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Cod sursa(job #443558)
#include<cstdio>
#include<utility>
#include<vector>
#include<deque>
#define NV it->first
#define DV it->second
using namespace std;
vector<pair<int,int> > v[50010];
deque<int> q;
void read(),solve();
int n,m,A,B,C,L,D,N,cnt[50010],d[50010],oo=500000000,viz[50010],i;
int main()
{
read();
solve();
return 0;
}
void read()
{
freopen("bellmanford.in","r",stdin);
freopen("bellmanford.out","w",stdout);
scanf("%d%d",&n,&m);
for(;m;m--)
{
scanf("%d%d%d",&A,&B,&C);
v[A].push_back(make_pair(B,C));
}
}
void solve()
{
vector<pair<int,int> >::iterator it;
for(i=2;i<=n;i++)d[i]=oo;
q.push_back(1);d[1]=0;
for(;q.size();)
{
N=q.front();D=d[N];
for(it=v[N].begin();it!=v[N].end();it++)
if(D+DV<d[NV])
{
if(!viz[NV])
{
viz[NV]=1;cnt[NV]++;
if(cnt[NV]>n)
{
printf("Ciclu negativ!\n");
return;
}
q.push_back(NV);
}
d[NV]=D+DV;
}
q.pop_front(); viz[N]=0;
}
for(i=2;i<=n;i++)
printf("%d ",d[i]);
}