#include<stdio.h>
#define douamiliarde 1000000000;
unsigned long long prod[10001];
int main()
{
int n;
long m,i,a,b,c,j;
freopen("oz.in","r",stdin);
freopen("oz.out","w",stdout);
scanf("%d%ld",&n,&m);
for(i=1;i<=n;i++)
prod[i]=1;
for(i=1;i<=m;i++)
{
scanf("%ld%ld%ld",&a,&b,&c);
prod[a]*=c;
prod[b]*=c;
for(j=1;j<=n;j++)
if(prod[j]>douamiliarde)
{
printf("-1");
return 0;
}
}

for(i=1;i<=n;i++)
printf("%llu ",prod[i]);
fcloseall();
return 0;
}