Cod sursa(job #2427808)
Utilizator | Data | 2 iunie 2019 12:36:33 | |
---|---|---|---|
Problema | Fractii | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.42 kb |
#include<fstream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
int cmmdc(int a,int b)
{
while(b)
{
int r=a%b;
a=b;
b=r;
}
return a;
}
int main()
{
int n,i,j,k;
fin>>n;
k=2*n-1;
for(i=2;i<=n;i++)
for(j=2;j<=n;j++)
{
if(cmmdc(i,j)==1)
k++;
}
fout<<k;
}