Cod sursa(job #369900)

Utilizator remus_maziluRemus Mazilu remus_mazilu Data 29 noiembrie 2009 18:28:41
Problema Fractii Scor 10
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include<fstream.h>
#include<iostream.h>
fstream in("fractii.in",ios::in),out("fractii.out",ios::out);
long cmmdc(long a,long b)
{ while( a!=0 && b!=0)
	if(a>b) a%=b;
	else b%=a;
if(a==0) return b;
else return a;
}
int main() {
long n, i , j,k=0;
in>>n;
for(i=2;i<=n;i++)
for(j=1;j<=n;j++)
	if(cmmdc(i,j)==1) k++;
out<<k+n;
return 0;
}