#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int age(int x){ if(x==10)return 1; else{ return (age(n+1)+1)*2; } } int main(){ cout<<age(1); return 0; }