> #include <stdio.h>
> #include <math.h>
> void main (){
> 	int cc[6][3],bc[16][3],x,y,z,D[6][16],min;
> 	int i=0,k,t=0;
> 	for(i=0;i<16;i++)
> 		scanf("%d %d %d",&bc[i][0],&bc[i][1],&bc[i][2]);
> 	scanf("%d %d %d",&x,&y,&z);
> 	while(x!=-1 && y!=-1 && z!=-1){
> 		for(k=0;k<16;k++)
> 			D[i][k]=(x-bc[k][0])*(x-bc[k][0])+(y-bc[k][1])*(y-bc[k][1])+(z-bc[k][2])*(z-bc[k][2]);
> 		for(k=0,min=D[i][0];k<16;k++){
> 			if(min>D[i][k]){
> 				min=D[i][k];
> 				t=k;
> 			}
> 		}
> 		cc[i][0]=bc[t][0];
> 		cc[i][1]=bc[t][1];
> 		cc[i][2]=bc[t][2];
> 		printf("(%d %d %d) maps to (%d %d %d)\n",x,y,z,cc[i][0],cc[i][1],cc[i][2]);
> 		i++;
> 		scanf("%d %d %d",&x,&y,&z);
> 	}
> }