Cod sursa(job #1449131)

Utilizator TheNeighbourPlamada Ciprian TheNeighbour Data 8 iunie 2015 19:51:15
Problema Fractii Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>
using namespace std;

int cmmdc(int a,int b)
{int c;
while(b)
{c=a%b;
a=b;
b=c;
}
return a;
}



int main()
{
ifstream f("fractii.in");
ofstream g("fractii.out");
int n,i,j,nr;
f>>n;
nr=n*2-1;
for(i=2;i<=n-1;i++)
    for(j=i+1;j<=n;j++)
        if(cmmdc(i,j)==1) nr=nr+2;
g<<nr;

return 0;
}