/* The Great Win32 Language Shootout http://dada.perl.it/shootout/ 
   contributed by Isaac Gouy (Nice novice)

To compile:	
   nicec --sourcepath=.. -d=. -a fibo.jar fibo

To run:
   java -jar fibo.jar 32
*/


import ackermann; // reuse toSingleInt


void main(String[] args){
    println( fib( toSingleInt(args) ) ); 
}


int fib(int n){ 
   if (n < 2) return 1; else return fib(n-2) + fib(n-1);
}