{
int x,y,z,count=0; //x,y,z分別代表紅、白、黃三球數
for(x=0;x<=3;x++)
for(y=0;y<=3;y++)
for(z=0;z<=6;z++)
if(x+y+z==8)
count++;
}
printf("the total num is %d\n",count);