#include <stdio.h>
#define N 9
typedef struct node
{   int i,j,v;
}JD;

int trans_sparmat(JD  ma[],JD mb[])
{  int col,p,n,t,k;
   if(ma[0].v==0)
      return(0);
   n=ma[0].j;
   t=ma[0].v;
   mb[0].i=n;  mb[0].j=ma[0].i; mb[0].v=t;
   k=1;
   for(col=1;col<=n;col++)
      for(p=1;p<=t;p++)
         if(ma[p].j==col)
         {   mb[k].i=ma[p].j;
             mb[k].j=ma[p].i;
             mb[k].v=ma[p].v;
             k++;
         }
   return(1);
}
void main()
{   JD ma[N]={{6,7,8},{1,2,12},{1,3,9},{3,1,-3},
	      {3,6,14},{4,3,24},{5,2,18},{6,1,15},{6,4,-7}};
    JD mb[N];
    int i;
    trans_sparmat(ma,mb);
    for(i=0;i<N;i++)
       printf("%d,%d,%d\n",mb[i].i,mb[i].j,mb[i].v);
}