Cod sursa(job #790491)
Utilizator | Data | 21 septembrie 2012 16:29:34 | |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.53 kb |
#include<iostream>
#include<fstream>
using namespace std;
long i,n,nr,j;
int cmmdc(int a,int b)
{
/* while(a!=b)
if(a<b)
b-=a;
else
a-=b;
return a;
*/
if(a==b) return a;
if(a<b)
return cmmdc(a,b-a);
else
if(a>b)
return cmmdc(a-b,b);
}
int main()
{
ifstream cit("fractii.in");
ofstream afis("fractii.out");
cit>>n;
if(n==1)
afis<<"1";
else
{
nr=n;
for(i=2;i<=n;i++)
for(j=1;j<=n;j++)
if(i!=j)
if(cmmdc(i,j)==1)
nr++;
afis<<nr;
}
return 0;
}