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#include <fstream>
using namespace std;
ifstream fin("oz.in");
ofstream fout("oz.out");
int main()
{
int ok=1,n,m,v[10001],a,b,c;
fin>>n>>m;
for(int i=1;i<=n;i++){
v[i]=1;
}
for(int i=1;i<=m;i++){
fin>>a>>b>>c;
if(v[a]*c>2000000000){
ok=0;
break;
}else{
v[a]=v[a]*c;
}
if(v[a]*c>2000000000){
ok=0;
break;
}else{
v[b]=v[b]*c;
}
}
if(ok==1){
for(int i=1;i<=n;i++){
fout<<v[i]<<" ";
}
}else{
fout<<-1;
}
return 0;
}