#include <stdio.h>
int a(int n){
int s;
if(n==0){
return 0;
}
else{
s=a(n-1)*a(n-1)+1;
return s;
}
}
int main(void) {
int i;
for(i=1;i<=6;i++){
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CmludCBhKGludCBuKXsKCWludCBzOwoJaWYobj09MCl7CgkJcmV0dXJuIDA7Cgl9CgllbHNlewoJcz1hKG4tMSkqYShuLTEpKzE7CglyZXR1cm4gczsKCX0KCQp9CmludCBtYWluKHZvaWQpIHsKCWludCBpOwoJZm9yKGk9MTtpPD02O2krKyl7CglwcmludGYoImEoJWQpPSVkXG4iLGksYShpKSk7Cgl9CglyZXR1cm4gMDsKfQo=