Cod sursa(job #674287)
Utilizator | Data | 5 februarie 2012 23:00:20 | |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.37 kb |
#include<fstream>
using namespace std;
ofstream out("fractii.out");
int n;
int cmmdc(int a,int b);
int main()
{
ifstream in("fractii.in");
in>>n;
int i,j,rez=0;
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
if(cmmdc(i,j)==1)
++rez;
}
out<<rez;
return 0;
}
int cmmdc(int a,int b)
{
int r;
while(a%b!=0)
{
r=a%b;
a=b;
b=r;
}
return b;
}