Cod sursa(job #1690549)

Utilizator xandruGuzun Alexandru xandru Data 15 aprilie 2016 11:33:35
Problema Al k-lea termen Fibonacci Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.38 kb
#include<bits/stdc++.h>

using namespace std;

ifstream fin("kfib.in");
ofstream fout("kfib.out");
#define mod 666013
long long n;
map<long long,long long > fib;
long long f(long long x){

if(fib.count(x)) return fib[x];
return fib[x]=(f((x+1)/2)*f(x/2)+f((x-1)/2)*f((x-2)/2))%mod;
}
int main()
{
	fin>>n;
	fib[0]=fib[1]=1;
	fout<<f(n-1)<<"\n";
	
	
	return 0;
}