#include<stdio.h>
int main(){

	int fn, fnm1, fnm2, n, N;	
	printf("Enter the value of N: (small postive int and above 2)\n");
	scanf("%d", &N);

	fnm2=0; fnm1=1; n=2; 
	while(n<=N){
		fn = fnm2 + fnm1;
		fnm2=fnm1; fnm1=fn;
		n = n + 1;
	}
	printf("%d th Fibonacci Number is %d \n", N, fn);

	return 0;
}