include[HTML_REMOVED]

using namespace std;

define swap(a,b){int temp=a;a=b;b=temp;}

int data[]={1,2,3,4,5,6,7,8,9};
int num=0;
int Perm(int begin,int end){
int i;
if(begin==end) {
num;
}
else
for( i = begin; i <= end;i){
swap(data[begin],data[i]);
Perm(begin+1,end);
swap(data[begin],data[i])
}
}
int main(){
Perm(0,9);
cout<<num<<endl;
return 0;
}