Cod sursa(job #502773)
Utilizator | Grigore Alexandru lilskip | Data | 20 noiembrie 2010 13:15:23 |
---|---|---|---|
Problema | Fractii | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.41 kb |
#include <fstream>
#include <iostream>
int cmmdc(int a, int b)
{
while(a)
{
if(a==b) return a;
if(a>b) a=a-b;
else b=b-a;
}
}
int main()
{ int n, i, j, k;
ifstream f("fractii.in");
f>>n;
k=n;
f.close();
for(i=2;i<=n;i++)
for(j=1;j<=n;j++)
if(cmmdc(i,j)==1) k++;
ofstream g("fractii.out");
g<<k;
g.close();
return 0;
}