Cod sursa(job #851976)
Utilizator | Data | 10 ianuarie 2013 18:07:37 | |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.48 kb |
#include<fstream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int v[1000000],N,o;
int cmmdc(int a, int b)
{ int x,y,r;
x=a;
y=b;
r=x%y;
while(r)
{
x=y;
y=r;
r=x%y;
}
return y;
}
int main()
{ fin>>N;
for(int i=1;i<=N;i++)
{
v[i]=i;
}
for(int i=1;i<=N;i++)
for(int j=1;j<=N;j++)
{
if(cmmdc(v[i],v[j])==1)
o++;
//fout<<endl<<v[i]<<v[j];
}
fout<<o;
return 0;
}