Cod sursa(job #644202)
Utilizator | Razvan span7a | Data | 5 decembrie 2011 16:39:57 |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.37 kb |
#include <iostream>
#include <cstdio>
using namespace std;
int u(int a,int b)
{
int r;
while(b)
{
r=a%b;
a=b;
b=r;
}
return a;
}
int main()
{ freopen("fractii.in","r",stdin);
freopen("fractii.out","w",stdout);
int nr=0,j,i,n;
scanf("%d",&n);
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(u(i,j)==1)
nr++;
printf("%d",nr);
return 0;
}