Cod sursa(job #367101)
| Utilizator |  Remus Mazilu remus_mazilu |
Data | 22 noiembrie 2009 12:24:14 |
|---|---|---|---|
| Problema | Fractii | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.32 kb |
#include<iostream.h>
#include<fstream.h>
fstream in("fractii.in",ios::in), out("fractii.out",ios::out);
int cmmdc(int a,int b)
{ int c;
while(b>0){
c=a%b;
a=b;
b=c;
}
return a;
}
main()
{
long n,i,j,x=0,y;
in>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
{ y=cmmdc(i,j);
if (y!=1) x++;
}
out<<n*n-x;
}