CodePudding user response:

 int gcount=0; 

Long long getp (int n) {
Gcount++; 
If (n<1) return 1; 
Else if (n==1) return 7; 
Else if (n==2) return 11; 
Return getp getp (n - 1) + (n - 2);//here is called recursive twice, so low efficiency 
} 

Int main () {
int n; 
The scanf (" % d ", & amp; N); 
Getp (n); 
Printf (" % d \ n ", gcount); 
return 0; 
}