#import<bits/stdc++.h>
std::ifstream r("apm.in");std::ofstream w("apm.out");struct s{int x,y,z;}d,e[1<<20];int m,k,i,j,z,t[1<<20],x;int f(int &x){return x=t[x]^x?f(t[x]):x;}int main(){r>>m>>m;while(r>>e[i].x>>e[i].y>>e[t[i]=i].z)i++;std::sort(e,e+m,[](s a,s b){return a.z<b.z;});for(;j<m;){d=e[j++];x=f(d.x);if(x^(t[x]=f(d.y)))z+=d.z,e[k++]=d;}w<<z<<" "<<k<<" ";while(k--)w<<e[k].x<<" "<<e[k].y<<" ";}