char ma=0, mb=0;
void find_min_err( int gain ){
 int a,b;
 int err=32767;
 for(a=1;a<16;a++){
  for(b=0;b<16;b++){
   if((a*b)>gain ) continue;
   else{
    if((gain-(a*b))<=err){
     err = (gain-(a*b));
     ma=(char)((a>=b)?(a):(b));
     mb=(char)((a<=b)?(a):(b));
    }}}}}
void NOD( unsigned int gain ){
 if(gain < 16)
   printf("0x%02x ",gain);
 else if(gain == 16)
   printf("0x%02x ",0x0f);
 else { 
   find_min_err(gain+1);
   ma-=((gain<226) ?(1):(0));
   mb-=((gain==255)?(0):(1));
   if(ma>=mb) {ma=((mb<<4)|ma);}
   else       {ma=((ma<<4)|mb);}
   printf("0x%02x ",ma);
  }
}
void main(void){
 unsigned int x; 
 for( x=0; x<256; x++){
   NOD(x);
   if((x&0x0f)==0x0f)
     printf("\n");  
  }
}