Cod sursa(job #2342441)

Utilizator LucaDimitriePintilie Luca Dimitrie LucaDimitrie Data 12 februarie 2019 20:12:39
Problema Fractii Scor 10
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.46 kb
#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int main()
{
    int n,i,j,nr=0,a,b;
    fin>>n;
    for(i=3;i<=n;i++)
    {
        for(j=2;j<=i-1;j++)
        {
                a=i;
                b=j;
                while(a!=b)
                    if(a>b)a-=b;
                    else b-=a;
                if(a==1)nr++;
        }
    }
    fout<<(nr+n)*2-1;
    return 0;
}