#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 c(s a,s b){return a.z<b.z;}int m,k,i,j,z,t[1<<20],x;int f(int x){return t[x]^x?t[x]=f(t[x]):x;}int main(){r>>m>>m;for(;i<m;i++)r>>e[i].x>>e[i].y>>e[t[i]=i].z;std::sort(e,e+m,c);for(;j<m;j++){d=e[j];x=f(d.x),t[x]=f(d.y);if(x^t[x])z+=d.z,e[k++]=d;}w<<z<<" "<<k<<" ";while(k--)w<<e[k].x<<" "<<e[k].y<<" ";}