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Cod sursa(job #683436)
#include<cstdio>
#include<vector>
#include<deque>
#include<bitset>
using namespace std;
void read(),solve();
int m,n,i,x,y,z,d[50010],cnt[50010];
bitset<50010> k;
vector<pair<int,int> > v[50010];
deque<int> q;
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",&x,&y,&z);
v[x].push_back(make_pair(y,z));
}
}
void solve()
{
vector<pair<int,int> >::iterator it;
for(i=2;i<=n;i++)
d[i]=1<<30;
d[1]=0;q.push_back(1);
for(;q.size();)
{
for(it=v[q.front()].begin();it!=v[q.front()].end();it++)
if(d[q.front()]+it->second<d[it->first])
{
if(!k[it->first])
{
cnt[it->first]++;
k[it->first]=1;
d[it->first]=d[q.front()]+it->second;
if(cnt[it->first]>n)
{
printf("Ciclu negativ!");
return;
}
q.push_back(it->first);
}
d[it->first]=d[q.front()]+it->second;
}
k[q.front()]=0;
q.pop_front();
}
for(i=2;i<=n;i++)
printf("%d ",d[i]);
}