Cod sursa(job #3298911)

Utilizator alexxsFilca Paul Alexandru alexxs Data 2 iunie 2025 23:49:59
Problema Al k-lea termen Fibonacci Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;

ifstream fin("kfib.in");
ofstream fout("kfib.out");


int main()
{
    int f1,f2,K;
    long long fk;
    fin>>K;
    f1=0;
    f2=1;
    fk=(pow((1+sqrt(5))/2,K)-pow((1-sqrt(5))/2,K))/sqrt(5);
    fout<<fk;
    fin.close();
    fout.close();
}