Cod sursa(job #363753)
Utilizator | Data | 14 noiembrie 2009 16:54:21 | |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.31 kb |
#include<fstream.h>
ifstream f("fractii.in");
ofstream g("fractii.out");
int n;
int cmmdc(int a,int b)
{while(a!=b){if(a>b)a-=b;
else b-=a;
}
return a;
}
int main()
{f>>n;
int nr=0;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)if(cmmdc(i,j)==1)nr++;
g<<nr;
return 0;
}