Cod sursa(job #2100466)

Utilizator lorena_simonSimon Lorena lorena_simon Data 5 ianuarie 2018 17:50:30
Problema Fractii Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>


using namespace std;
ifstream f("fractii.in");
ofstream g("fractii.out");

int euclid(int a,int b){
    if(b==0) return a;
    return euclid(b,a%b);
}

int main()
{int n,j;
int s,i;
s=0;f>>n;
for(i=1;i<=n;i++){
    for(j=i+1;j<=n;j++){
        if(euclid(i,j)==1) s++;
    }
}s=s*2+1;
g<<s;

    return 0;
}