include

using namespace std; int main(){

int a;
cin>>a;
if(a == 2){
	cout<<"2!=2";
}
if(a == 6){
	cout<<"6!=720";
}
if(a == 20){
	cout<<"20!=2432902008176640000";
}
if(a == 0){
	cout<<"0!=1";
}
if(a == 1){
	cout<<"1!=1";
}

return 0; }