Cod sursa(job #421542)
Utilizator | Data | 21 martie 2010 14:34:38 | |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.36 kb |
#include <iostream>
#include <fstream>
using namespace std;
long cmmdc(long i,long j) {
if(i%j==0) return j;
else return cmmdc(j,i%j);
}
int main() {
long n,t=0,i,j;
ifstream f("fractii.in");
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(cmmdc(i,j)==1)
t++;
ofstream g("fractii.out");
g<<t;
f.close();
g.close();
return 0;
}