OJ Board

i got quite curious about this issue (getting AC with stl set), but found no exact answer. Is cell phone spy anybody in the know?

int main()
{
int num,num1,num2;

while(scanf("%d",&num)==1)
{
if(num<8)printf("Impossible.\n");

else if(num==8)printf("2 2 2 2\n");

else if(num>8)
{
if(num%2!=0)
{
num1 = num-5;