Cod sursa(job #705182)

Utilizator AltimosPanaite Adrian Altimos Data 3 martie 2012 17:07:50
Problema Fractii Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.35 kb
Raporteaza aceasta sursa 
#include<fstream>
using namespace std;
ifstream f("fractii.in");
ofstream g("fractii.out");
int cmmdc(int a,int b)
{while (a!=b)
		if (a>b)
			a-=b;
		else
			b-=a;
return a;}
int main()
{long n,i,j;
long long nr;
f>>n;nr=2*n-1;
for (i=2;i<=n;i++)
	for (j=i;j<=n;j++)
		if (cmmdc(i,j)==1)
			nr+=2;
g<<nr;
f.close();
g.close();
return 0;}